Standardize on a copyright header and ensure all files have them.

Change-Id: I64812bca01ca655c9cf9239a0daea84907082a29
Sync latest openstack-common updates.

Change-Id: I09adc9b5c01aa97ffba58dff8a696172e8654e3e
Use the cliff framework's ShowOne as intended for `show image`.

Also reformat code to follow newer PEP8 version. Full cleanup
and PEP8 version bump coming in later patch.

Change-Id: Ida3dd9a89660b9c4a91449846dd2d6e223ef187a
v3 identity - group and project api

updated with latest comments
modified entry points in setup.py
added group.py (v3)
added project.py (v3)
fixed indentation
updated to include new headers

Change-Id: Ice68b6c5bacb68d2e95321d903043056a9b8e810
Merge "Standardize on a copyright header and ensure all files have them."
Merge "Sync latest openstack-common updates."
Merge "Use the cliff framework's ShowOne as intended for `show image`."
First pass at adding compute unit tests.

Change-Id: Icf3340d457f75eec89bb0e5c9b4b953c3b81020f