Reserve apps-pg role and database for coulomb-social

Managed role coulomb_social with passwordSecret
coulomb-social-app-credentials; Database CR coulomb_social_db.
Activates when apps-pg cluster is deployed.

helm/apps-pg-databases.yaml

@@ -19,3 +19,20 @@ spec:
   name: vergabe_db
   owner: vergabe
   ensure: present
+---
+apiVersion: postgresql.cnpg.io/v1
+kind: Database
+metadata:
+  name: coulomb-social-db                  # CSOC-WP-0002
+  namespace: databases
+  labels:
+    app.kubernetes.io/name: apps-pg
+    app.kubernetes.io/component: database-instance
+    railiance.io/layer: s3-platform
+    railiance.io/consumer: coulomb-social
+spec:
+  cluster:
+    name: apps-pg
+  name: coulomb_social_db
+  owner: coulomb_social
+  ensure: present