* splitting the changes seen in 27142 to a few new patches
* this one will just update v3 user to have description and domain
Change-Id: I9b4c365703da27e26ddc702f37cf5928e19cebdc
* Use multiple entry point groups to represent each API+version
combination supported
* Add some tests
Try it out:
* Right now only '* user' commands have multiple overlapping versions;
you can see the selection between v2.0 and v3 by looking at the
command help output for 'tenant' vs 'project':
os --os-identity-api-version=2.0 help set user
os --os-identity-api-version=3 help set user
Change-Id: I7114fd246843df0243d354a7cce697810bb7de62
