9519601401
Change the Adapter loading for glance to use the auth from the user
context instead of exposing and requiring it in the conf. With this
change, it is possible to leave the [glance] conf section empty and
still be able to discover the image API endpoint from the service
catalog.
Note that, when we do this, we often end up with the user auth being a
_ContextAuthPlugin, which doesn't conform to the characteristics of
keystoneauth1.identity.base.BaseIdentityPlugin as augmented in
keystoneauth1 3.1.0. This requires a series of workarounds until bug
1709118 is fixed. These, along with workarounds for bugs 1707993 and
1707995, are subsumed with this change set in a (hopefully temporary)
helper method nova.utils.get_endpoint.
This lays the foundation for other services that should use user
context for authentication - those via which Nova is acting on behalf
of the user, i.e. cinder, keystone, and (sometimes) neutron[1].
(Services such as placement and ironic (and sometimes neutron) should
continue to use admin auth context loaded from the conf.)
[1]
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