Bump dependencies stream (#841)

* Bump Postgresql, Nginx and Redis versions
* pg12 --> pg13 upgrade path
* Set supported pg version as a variable to remain DRY
* Make deleting the old db data pvc after upgrade configurable
* Use labels to find the postgres pod

* backup/restore: fix postgres label selector value

We need to use the deployment_name variable for the postgres instance
name.

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>

* backup/restore: add missing default supported_pg_version variable

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>

* restore: update database_host fact with pg suffix

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>

Co-authored-by: Dimitri Savineau <dsavinea@redhat.com>

roles/installer/defaults/main.yml

@@ -129,7 +129,7 @@ _image_version: "{{ lookup('env', 'DEFAULT_AWX_VERSION') or 'latest' }}"
 _redis_image: docker.io/redis
 _redis_image_version: 7
 _postgres_image: postgres
-_postgres_image_version: 12
+_postgres_image_version: 13
 _init_container_image: quay.io/centos/centos
 _init_container_image_version: stream8
 image_pull_policy: IfNotPresent
@@ -223,6 +223,9 @@ ee_extra_volume_mounts: ''
 #   kubernetes.io/os: linux
 postgres_selector: ''
 
+# Specify whether or not to keep the old PVC after PostgreSQL upgrades
+postgres_keep_pvc_after_upgrade: True
+
 # Add node tolerations for the Postgres pods.
 # Specify as literal block. E.g.:
 # postgres_tolerations: |