Glance: Ensure nfs is mounted before starting glance-api

The glance-api service requires that access to NFS backend is ready
before the service is started. This adds systemd service dependency to
enforce that ordering.

Closes-Bug: #1977991
Depends-on: https://review.opendev.org/c/openstack/tripleo-ansible/+/839295
Change-Id: Ic4f596a9489d6b9923f55c987e107d33ebb710e7

deployment/glance/glance-api-container-puppet.yaml

@@ -787,6 +787,12 @@ outputs:
             net: host
             privileged: {if: [cinder_backend_enabled, true, false]}
             restart: always
+            depends_on:
+              if:
+                - or:
+                    - {get_param: GlanceNfsEnabled}
+                    - {get_param: GlanceNetappNfsEnabled}
+                - var-lib-glance-images.mount
             healthcheck:
               test: /openstack/healthcheck
             volumes: *glance_volumes