Removes volumes redefinition in fake nova_client

Reasons:
- The redefinition of nova_client.volumes was making it,
  nova_client.volumes.volumes, if we needed to call the volume APIs
  from nova_client.
- nova_client.volumes is already defined when defining "class FakeClient".

Changes:
- Removes redefinition of nova_client.volumes.

Change-Id: I5981d461e5a0fd000214c35d5d0be58d86d6d368
Closes-Bug: #1292457
Start using oslosphinx theme for docs

Change-Id: I0d08e7abbbf51d526d379e8fcea7151ba16d1746
Changes Volume Prefix From mysql To datastore

changes the volume name from mysql-<uuid> to datastore-<uuid>. now
that multiple datastore types are supported, the volume name prefix
should not be hardcoded to "mysql-" so as to avoid confusion to the
user and/or cloud administrator.

Change-Id: Ib585eab42f609095dee709b6e6e5eb980eff42af
Closes-Bug: #1277401
Don't specify admin_token in paste config

This is not a value that is going to be useful on other systems and
shouldn't be included in the default pipeline.

Closes-Bug: #1299332
Change-Id: I714539b7536965fa08a3ddc64493b481df7397e3
Fix internal error generated from config-detach

Log debug statement referred to an attribute that could be null
Moved the statement to below the check for null

Change-Id: Ib69584e5eb1723734cb8b8af2761d29a79034942
Closes-Bug: #1302657
Merge "Fix internal error generated from config-detach"
Merge "Changes Volume Prefix From mysql To datastore"
Merge "Start using oslosphinx theme for docs"
Merge "Removes volumes redefinition in fake nova_client"
Merge "Don't specify admin_token in paste config"