Enable Cinder volume backups

To properly enable Cinder volume backup, the following configuration
changes are required:
- For Cinder, enable 'CephBackupDriver' as the Cinder backup_driver and
  'cinder' as the rbd_user for each Cinder backend
- For libvirt, enable Ceph and use 'cinder-volume-rbd-keyring' for the
  Ceph client user secret. This will create a libvirt secret that will
  be used with the 'cinder' user.
- For nova, enable the rbd_secret_uuid shared with libvirt and set the
  'rbd_user' to cinder.
- Update the chart group initialization sequence, so that
  'openstack-cinder' is initialized prior to 'openstack-compute-kit'.
  This is done because 'cinder-volume-rbd-keyring' is created by Cinder
  and is required by libvirt to successfully initialize.

With these configuration changes:
- Cinder volumes were created
- Cinder volumes were backed up
- Instances were booted by volume (from Cinder)
- Instances were booted by image (from Ceph ephemeral disks)

Change-Id: I29c7d3ed118f4a6726f2ea887a165f256bc32fd5
Depends-On: https://review.opendev.org/#/c/664619/
Story: 2004520
Task: 28266
Signed-off-by: Robert Church <robert.church@windriver.com>

stx-openstack-helm/centos/build_srpm.data

@@ -1,4 +1,4 @@
 SRC_DIR="stx-openstack-helm"
 COPY_LIST_TO_TAR="$PKG_BASE/../../../helm-charts/garbd \
     $PKG_BASE/../../../helm-charts/clients"
-TIS_PATCH_VER=14
+TIS_PATCH_VER=15

stx-openstack-helm/stx-openstack-helm/manifests/manifest.yaml

@@ -684,7 +684,7 @@ data:
     conf:
       cinder:
         DEFAULT:
-          backup_driver: cinder.backup.drivers.swift
+          backup_driver: cinder.backup.drivers.ceph.CephBackupDriver
     storage: rbd
   source:
     type: tar
@@ -711,12 +711,16 @@ data:
   upgrade:
     no_hooks: false
   values:
+    ceph_client:
+      user_secret_name: cinder-volume-rbd-keyring
     labels:
       agent:
         libvirt:
           node_selector_key: openstack-compute-node
           node_selector_value: enabled
     conf:
+      ceph:
+        enabled: true
       kubernetes:
         cgroup: "k8s-infra"
     images:
@@ -929,8 +933,7 @@ data:
           live_migration_completion_timeout: 180
           live_migration_permit_auto_converge: true
           mem_stats_period_seconds: 0
-          rbd_secret_uuid: null
-          rbd_user: null
+          rbd_user: cinder
           # Allow up to 1 day for resize conf
           remove_unused_resized_minimum_age_seconds: 86400
         database:
@@ -3242,9 +3245,9 @@ data:
     - openstack-clients
     - openstack-barbican
     - openstack-glance
+    - openstack-cinder
     - openstack-ceph-rgw
     - openstack-compute-kit
     - openstack-heat
     - openstack-horizon
-    - openstack-cinder
     - openstack-telemetry