Add image member methods to openstackv2

[vdloo]

Add list image member methods to openstack v2 driver

includes and depends on #1151

this allows listing image members, see https://developer.openstack.org/api-ref/image/v2/index.html#sharing. in openstack you can share images between tenants. when an image is set to 'shared' other tenants can be added as 'member'. all members of an image can be listed to see which tenants have access and if they have accepted or rejected the membership yet or if it is still pending. this PR adds the new NodeImageMember class which contains image id, member id, state and more.

list image members

In [6]: conn.ex_list_image_members(image.id)
Out[6]: 
[<NodeImageMember: id=016926dff12345e8b10329f24c99745b, image_id=d9a9cd9a-278a-444c-90a6-d24b8c688a63, state=accepted, driver=OpenStack  ...>,
...

In [7]: image_member = conn.ex_list_image_members(image.id)[0]

In [8]: dir(image_member)
Out[8]: 
['__class__',
 '__delattr__',
 '__dict__',
 '__doc__',
 '__format__',
 '__getattribute__',
 '__hash__',
 '__init__',
 '__module__',
 '__new__',
 '__reduce__',
 '__reduce_ex__',
 '__repr__',
 '__setattr__',
 '__sizeof__',
 '__str__',
 '__subclasshook__',
 '__weakref__',
 '_uuid',
 'created',
 'driver',
 'extra',
 'get_uuid',
 'id',
 'image_id',
 'state',
 'uuid']

In [9]: image_member.extra
Out[9]: 
{'created': u'2018-01-12T12:31:50Z',
 'schema': u'/v2/schemas/member',
 'updated': u'2018-01-12T12:31:54Z'}

list image member:

In [7]: conn.ex_list_image_member(image.id, member.id)
Out[7]: <NodeImageMember: id=016926dff12345e8b10329f24c99745b, image_id=d9a9cd9a-278a-444c-90a6-d24b8c688a63, state=accepted, driver=OpenStack  ...>

Status

• done, ready for review

[pquentin]

Can you please rebase your changes on top of the latest trunk? It would allow to see coverage info, since the latest trunk fixes an issue with sphinx. Thanks!

[vdloo]

yes no problem. also please see #1151, this PR depends on and includes that one

[codecov-io]

Codecov Report

Merging #1172 into trunk will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##            trunk    #1172      +/-   ##
==========================================
+ Coverage   86.13%   86.17%   +0.03%     
==========================================
  Files         348      348              
  Lines       66981    67137     +156     
  Branches     5952     5956       +4     
==========================================
+ Hits        57694    57853     +159     
+ Misses       6857     6853       -4     
- Partials     2430     2431       +1

Impacted Files	Coverage Δ
libcloud/compute/base.py	93.04% <100%> (+0.23%)	⬆️
libcloud/test/compute/test_openstack.py	96.22% <100%> (+0.28%)	⬆️
libcloud/compute/drivers/openstack.py	84.29% <100%> (+1.41%)	⬆️
libcloud/test/common/test_openstack_identity.py	97.94% <100%> (ø)	⬆️
libcloud/compute/types.py	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1eca23b...3ccc1d8. Read the comment docs.

[pquentin]

Is there a good reason to call this operation list and not get?

[vdloo]

Oops, has been changed to ex_get_image_member now to conform to the convention

[vdloo]

rebased on origin/trunk

[pquentin]

Thanks! Merged in trunk. ✨