Remove glance api_servers from nova config

This should now be able to be discovered from the service catalog,
there is no reason to set it.

Change-Id: I7383b589fbcef9423beeab735db42c594f7b56fd
get auth from context for glance endpoints:
Depends-On: I4e755b9c66ec8bc3af0393e81cffd91c56064717
1 file changed