Protect AccessKey deletion from failing

The deletion calls _get_user() that calls FnGetRefId for each
resource. But since this is the delete most resources have been
deleted.

bug #1131534

Change-Id: I08ffd27d1d05214b1a8cf86744e7d4f91d7e1558
Make quantumclient optional again

Don't crash if quantumclient is not available; just don't register the
resource types that require it.

Change-Id: I9dacc5397327ef7ec784f808227582ee9bd037df
Signed-off-by: Zane Bitter <zbitter@redhat.com>
Remove compat cfg wrapper

This wrapper was there to allow oslo-config changes through the gate
while keystoneclient hadn't been updated.

Change-Id: I3d48673af58ae379e8e4d2c7fb4b4d81f3ed67dd
Merge "Make quantumclient optional again"
Merge "Remove compat cfg wrapper"
Merge "Protect AccessKey deletion from failing"