Test glance RBAC old defaults

Glance has enabled the scope checks and new defaults in
antelope release and now devstack is switching the testing
to new defaults by default (depends-on). With that all the
jobs will run the the new defaults.

As old defaults are still supported (as deprecated), we should
test those at least in a single integrated job. Enable the old
defaults in glance-multistore-cinder-import job.

Keeping existing job enabling the new defaults because other services
have not switched to new defaults yet to this job enable new defaults
for those service and test Glance against that.

Depends-On: https://review.opendev.org/c/openstack/devstack/+/883601/
Change-Id: I470e3b8c1106d88e85343508a8e5891c88861c98

.zuul.yaml

@@ -245,6 +245,9 @@
         GLANCE_ENABLE_MULTIPLE_STORES: True
         CINDER_ENABLED_BACKENDS: lvm:lvmdriver-1,lvm:lvmdriver-2
         GLANCE_CINDER_DEFAULT_BACKEND: lvmdriver-1
+        # Glance RBAC new defaults are tested by default so we need to test
+        # old defaults in some job.
+        GLANCE_ENFORCE_SCOPE: false
 
 - job:
     name: glance-multistore-cinder-import-fips
@@ -299,9 +302,9 @@
       Glance services.
     vars:
       devstack_localrc:
-        NOVA_ENFORCE_SCOPE: true
+        # Nova and glance scope and new defaults are enabled by default in
+        # Devstack so we do not need to explicitly set that to True.
         CINDER_ENFORCE_SCOPE: true
-        GLANCE_ENFORCE_SCOPE: true
 
 - project:
     templates: