Fix glusterfs cluster check when condition

glusterfs and glusterfs_registry groups may not be
defined; we should account for that possibility.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1612012

playbooks/common/openshift-cluster/upgrades/pre/verify_cluster.yml

@@ -46,8 +46,8 @@
       name: openshift_storage_glusterfs
       tasks_from: check_cluster_health.yml
     when: >
-          "'glusterfs' in groups" and "groups['glusterfs'] | length > 0"
-          or "'glusterfs_registry' in groups" and "groups['glusterfs_registry'] | length > 0"
+          ('glusterfs' in groups and groups['glusterfs'] | length > 0)
+          or ('glusterfs_registry' in groups and groups['glusterfs_registry'] | length > 0)
 - name: Verify master processes
   hosts: oo_masters_to_config
   roles:

playbooks/common/openshift-cluster/upgrades/upgrade_nodes.yml

@@ -84,8 +84,8 @@
       name: openshift_storage_glusterfs
       tasks_from: check_cluster_health.yml
     when: >
-          inventory_hostname in groups['glusterfs']
-          or inventory_hostname in groups['glusterfs_registry']
+          ('glusterfs' in groups and inventory_hostname in groups['glusterfs'])
+          or ('glusterfs_registry' in groups and inventory_hostname in groups['glusterfs_registry'])
 
 - name: Re-enable excluders
   hosts: oo_nodes_to_upgrade:!oo_masters_to_config

playbooks/common/openshift-cluster/upgrades/v3_11/upgrade_control_plane.yml

@@ -106,8 +106,8 @@
       name: openshift_storage_glusterfs
       tasks_from: check_cluster_health.yml
     when: >
-          inventory_hostname in groups['glusterfs']
-          or inventory_hostname in groups['glusterfs_registry']
+          ('glusterfs' in groups and inventory_hostname in groups['glusterfs'])
+          or ('glusterfs_registry' in groups and inventory_hostname in groups['glusterfs_registry'])
 
 - import_playbook: ../upgrade_control_plane.yml
   vars: