Simplify pvc naming scheme, one pvc per deployment

roles/backup/tasks/init.yml

@@ -38,7 +38,7 @@
 # If tower_backup_pvc is defined, use in management-pod.yml.j2
 - name: Set default pvc name
   set_fact:
-    _default_backup_pvc: "{{ meta.name }}-backup-claim"
+    _default_backup_pvc: "{{ tower_name }}-backup-claim"
 
 # by default, it will re-use the old pvc if already created (unless a pvc is provided)
 - name: Set PVC to use for backup

roles/backup/templates/backup_pvc.yml.j2

@@ -2,7 +2,7 @@
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
-  name: {{ meta.name }}-backup-claim
+  name: {{ tower_name }}-backup-claim
   namespace: {{ tower_backup_pvc_namespace }}
 spec:
   accessModes:

roles/restore/README.md

@@ -32,7 +32,7 @@ metadata:
   namespace: my-namespace
 spec:
   tower_name: mytower
-  tower_backup_pvc: awxbackup1-backup-claim
+  tower_backup_pvc: myoldtower-backup-claim
   tower_backup_pvc_namespace: 'old-awx-namespace'
   tower_backup_dir: /backups/tower-openshift-backup-2021-04-02-03:25:08
 ```

roles/restore/tasks/init.yml

@@ -1,7 +1,7 @@
 ---
 - name: Set default pvc name
   set_fact:
-    _default_backup_pvc: "{{ meta.name }}-backup-claim"
+    _default_backup_pvc: "{{ tower_name }}-backup-claim"
 
 # by default, it will re-use the old pvc if already created (unless pvc is provided)
 - name: Set PVC to use for backup