Add token delete command for identity v2

Identity v2 has undocumented support for token delete and
keystoneclient also has support.

Change-Id: Ib98d17958ceb88f7b63471691dee71fdb884ce2e
Closes-Bug: #1318442
Refactor role list subcommand for identity v3 api

Currently parts of user list and group list command are actually
functioning as role listing, which is quite counter intuitive and
misleading.

This refactor change move role related logic to a single place of role
list command. It now allows role grants listing for user/group +
domain/project combinations.

If no user or group specified, it will list all roles in the system,
which is the default behaviour.

Change-Id: I4ced6df4b76f018d01000d28b4281ad9f252ffcc
Fix find_resource for keystone and cinder

The find_resource method had two hacks in in to support cinder
and keystone and I have removed those in favor of a monkey patch
for cinder.

The find_resource method used to attempt to UUID parse the id, but
it would do a manager.get anyway.  I changed it to skip the UUID
parsing.  This will make things run minorly faster and it supports
LDAP for keystone.

The find_resource used to attempt to use display_name=name_or_id
when finding.  This was a hack for cinder support, but it breaks
keystone because keystone totally messes up with the bogus filter
and keystone refuses to fix it.

Change-Id: I66e45a6341f704900f1d5321a0e70eac3d051665
Closes-Bug: #1306699
Add a docs job to tox.ini

A noticed that there wasn't a docs option when running tox.
Thought it would be a good idea to add one.

Partial-Bug: #1331304
Change-Id: I5af9ff5d5986ad546146c0fa73eb98256fd00c5f
Update docs template

To make things more consistent across all openstack projects, the
developer docs should be upgraded to the newer template used by
keystone and keystoneclient (and other projects).

I dropped in the necessary static files and themes, and updated
the config file to make the changes at build time.

Change-Id: I5a268cff3cd5af29ad712705d540b9d1d6667d56
Partial-Bug: #1331304
Merge "Add token delete command for identity v2"
Merge "Add a docs job to tox.ini"
Merge "Update docs template"
Change the token verb to issue/revoke

Change the token verb to issue/revoke as documented in:

https://wiki.openstack.org/wiki/OpenStackClient/Commands#token
https://wiki.openstack.org/wiki/OpenStackClient/Commands#Actions

Change-Id: I44f77f98ad3269c4f2149301c204804dcb75ac81
Merge "Change the token verb to issue/revoke"
Merge "Refactor role list subcommand for identity v3 api"
Updated from global requirements

Change-Id: I708fe9d2f10e53d61e67130ff41b0f92cddef64d