Increment juju to 2.2-beta4

[ExternalReality]

Please provide the following details to expedite Pull Request review:

---

Description of change

Increment version for release 2.2-beta3

QA steps

N/A

Documentation changes

N/A

Bug reference

N/A

[hmlanigan]

$$merge$$

[jujubot]

Status: merge request accepted. Url: http://juju-ci.vapour.ws:8080/job/github-merge-juju

[jujubot]

Build failed: The authorization page:
(https://launchpad.net/+authorize-token?oauth_token=78lQcPzMwh4HQzFpF6g6&allow_permission=DESKTOP_INTEGRATION)
should be opening in your browser. Use your browser to authorize
this program to access Launchpad on your behalf.
Waiting to hear from Launchpad about your decision...
Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sat, 29 Apr 2017 02:00:06 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sat, 29 Apr 2017 13:00:07 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sat, 29 Apr 2017 20:03:16 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sat, 29 Apr 2017 21:01:01 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sat, 29 Apr 2017 21:30:18 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sat, 29 Apr 2017 23:01:03 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sun, 30 Apr 2017 04:02:03 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Sun, 30 Apr 2017 14:01:06 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
connection: close
content-length: 1738
content-type: text/html
date: Sun, 30 Apr 2017 17:00:07 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Mon, 01 May 2017 00:00:07 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Mon, 01 May 2017 01:30:07 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

If the problem persists, let us know in the #launchpad IRC channel on freenode.

Technically, the load balancer took too long to connect to an application server.

Reload this page or try again in a few minutes

---

Unexpected response from Launchpad:
HTTP Error 502: Bad Gateway
Response headers:

-content-encoding: gzip
accept-ranges: bytes
content-length: 1738
content-type: text/html
date: Mon, 01 May 2017 02:08:02 GMT
etag: "6ca"
last-modified: Wed, 19 Nov 2014 16:06:07 GMT
server: Apache
status: 502
vary: Accept-Encoding

Response body:

<title>Launchpad is temporarily unavailable</title>

:(

Uh oh!

Something has gone wrong. We're sorry!

If we are in the middle of an update, Launchpad will be back in a couple of minutes. Otherwise, we are working to fix the unexpected problems. Check @launchpadstatus on Twitter for updates.

    build url: http://juju-ci.vapour.ws:8080/job/github-merge-juju/10793

[axw]

$$merge$$

[jujubot]

Status: merge request accepted. Url: http://juju-ci.vapour.ws:8080/job/github-merge-juju

[jujubot]

Build failed: Generating tarball failed
build url: http://juju-ci.vapour.ws:8080/job/github-merge-juju/10797

[Veebers]

$$merge$$

[axw]

$$merge$$

[jujubot]

Status: merge request accepted. Url: http://juju-ci.vapour.ws:8080/job/github-merge-juju

[jujubot]

Build failed: Tests failed
build url: http://juju-ci.vapour.ws:8080/job/github-merge-juju/10800

[jujubot]

Build failed: Tests failed
build url: http://juju-ci.vapour.ws:8080/job/github-merge-juju/10801

[axw]

Force merging this as it's just a version change, and mongo 3.2 failures keep happening. My PR will be queued next, which should address that.