[POSTGRES][COMMON] Add support for postgres operator

Add template for the postgres operator instance setup and
modifications to use the postgres instance via Operator
TBD: Update of documentation and fix for clients (DMaaP, CPS)

Issue-ID: OOM-3247

Change-Id: I56c34400dc73c71b936a51260efd231017adaeae
Signed-off-by: rajesh.kumar <rk00747546@techmahindra.com>
diff --git a/kubernetes/common/postgres/templates/pvc-replica.yaml b/kubernetes/common/postgres/templates/pvc-replica.yaml
index 1e453fb..f59adf7 100644
--- a/kubernetes/common/postgres/templates/pvc-replica.yaml
+++ b/kubernetes/common/postgres/templates/pvc-replica.yaml
@@ -14,6 +14,7 @@
 # limitations under the License.
 */}}
 
+{{- if not .Values.global.postgres.useOperator }}
 {{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) -}}
 kind: PersistentVolumeClaim
 apiVersion: v1
@@ -41,4 +42,5 @@
 {{- else }}
   storageClassName: {{ include "common.storageClass" . }}
 {{- end }}
-{{- end -}}
+{{- end }}
+{{- end }}
\ No newline at end of file