[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/robot/templates/deployment.yaml b/kubernetes/robot/templates/deployment.yaml
index 0db47f9..60316ed 100644
--- a/kubernetes/robot/templates/deployment.yaml
+++ b/kubernetes/robot/templates/deployment.yaml
@@ -112,5 +112,4 @@
         configMap:
           name: {{ include "common.fullname" . }}-lighttpd-ssl-configmap
           defaultMode: 0600
-      imagePullSecrets:
-      - name: "{{ include "common.namespace" . }}-docker-registry-key"
+      {{- include "common.imagePullSecrets" . | nindent 6 }}