[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/common/mariadb-galera/templates/backup/cronjob.yaml b/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
index 4548626..9f0a786 100644
--- a/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
+++ b/kubernetes/common/mariadb-galera/templates/backup/cronjob.yaml
@@ -162,8 +162,7 @@
                   readOnly: true
                 - name: backup-dir
                   mountPath: /backup
-          imagePullSecrets:
-            - name: {{ include "common.namespace" . }}-docker-registry-key
+          {{- include "common.imagePullSecrets" . | nindent 10 }}
           volumes:
             - name: localtime
               hostPath:
diff --git a/kubernetes/common/mariadb-galera/templates/statefulset.yaml b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
index 2f5b33f..70cc0c3 100644
--- a/kubernetes/common/mariadb-galera/templates/statefulset.yaml
+++ b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
@@ -221,8 +221,7 @@
           {{ include "common.containerSecurityContext" . | indent 10 | trim }}
           resources: {{- toYaml .Values.metrics.resources | nindent 12 }}
         {{- end }}
-      imagePullSecrets:
-        - name: {{ include "common.namespace" . }}-docker-registry-key
+      {{- include "common.imagePullSecrets" . | nindent 6 }}
       {{- if .Values.schedulerName }}
       schedulerName: {{ .Values.schedulerName | quote }}
       {{- end }}