fix(cloudnative-pg): add namespaces to cluster resources

kubernetes/main/apps/database/postgresql/cluster/prometheusrule.yaml

@@ -4,9 +4,7 @@ apiVersion: monitoring.coreos.com/v1
 kind: PrometheusRule
 metadata:
   name: cloudnative-pg-rules
-  labels:
+  namespace: database
-    prometheus: k8s
-    role: alert-rules
 spec:
   groups:
     - name: cloudnative-pg.rules

kubernetes/main/apps/database/postgresql/cluster/scheduledbackup.yaml

@@ -4,6 +4,7 @@ apiVersion: postgresql.cnpg.io/v1
 kind: ScheduledBackup
 metadata:
   name: postgres
+  namespace: database
 spec:
   schedule: "@daily"
   immediate: true

kubernetes/main/apps/database/postgresql/ks.yaml

@@ -37,6 +37,7 @@ spec:
   interval: 10m
   path: ./kubernetes/main/apps/database/postgresql/cluster
   prune: true
+  targetNamespace: database
   sourceRef:
     kind: GitRepository
     name: home-cluster