[COMMON] Make imagePullSecrets configurable

Currently in ONAP the imagePullSecrets is hardcoded to
'onap-docker-registry-key' which is created by the
repository-wrapper component.
With this change the secrets can be configured via setting
global.imagePullSecrets and optionally per image if it is
configured as map (image.pullSecrets)

Issue-ID: OOM-3284

Change-Id: I8644f9b46043b6014219c42928e057b149df43a4
Signed-off-by: Andreas Geissler <andreas-geissler@telekom.de>
diff --git a/kubernetes/a1policymanagement/templates/statefulset.yaml b/kubernetes/a1policymanagement/templates/statefulset.yaml
index b1d0407..4458744 100644
--- a/kubernetes/a1policymanagement/templates/statefulset.yaml
+++ b/kubernetes/a1policymanagement/templates/statefulset.yaml
@@ -28,8 +28,7 @@
     metadata:
       labels: {{- include "common.labels" . | nindent 8 }}
     spec:
-      imagePullSecrets:
-      - name: "{{ include "common.namespace" . }}-docker-registry-key"
+      {{- include "common.imagePullSecrets" . | nindent 6 }}
       initContainers:
       - name: {{ include "common.name" . }}-bootstrap-config
         image: {{ include "repositoryGenerator.image.envsubst" . }}