Move PORTS after ADDRESS in tabular status.

[jameinel]

The idea is that standard syntax is 'ip:port' so it makes more sense for PORTS
to come after ADDRESS instead of before.

Testing:

  $ juju bootstrap test-lxd lxd
  $ juju deploy mysql
  $ juju status

And see something like:

MODEL    CONTROLLER  CLOUD/REGION   VERSION
default  test-lxd    lxd/localhost  2.0-beta14.1

APP    VERSION  STATUS   EXPOSED  ORIGIN      CHARM  REV  OS
mysql           unknown  false    jujucharms  mysql  55   ubuntu

RELATION  PROVIDES  CONSUMES  TYPE
cluster   mysql     mysql     peer

UNIT     WORKLOAD  AGENT  MACHINE  PUBLIC-ADDRESS  PORTS     MESSAGE
mysql/0  unknown   idle   0        10.246.146.20   3306/tcp  

MACHINE  STATE    DNS            INS-ID         SERIES  AZ
0        started  10.246.146.20  juju-7c9629-0  trusty  

which shows that PORTS is coming after the PUBLIC-ADDRESS

[anastasiamac]

LGTM

[jameinel]

$$merge$$

[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/8550

[jameinel]

$$merge$$

[jujubot]

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