Add push secret for MSB docker images

Issue-Id: OOM-113
Change-Id: I9bab3903c4334c0587071eff077f1745bbd4460b
Signed-off-by: HuabingZhao <zhao.huabing@zte.com.cn>
diff --git a/kubernetes/msb/templates/msb-iag-deployment.yaml b/kubernetes/msb/templates/msb-iag-deployment.yaml
index 180c315..3ab9f9a 100644
--- a/kubernetes/msb/templates/msb-iag-deployment.yaml
+++ b/kubernetes/msb/templates/msb-iag-deployment.yaml
@@ -35,5 +35,6 @@
           initialDelaySeconds: 5
           periodSeconds: 10
         imagePullPolicy: "{{ .Values.pullPolicy}}"
-
+      imagePullSecrets:
+      - name: "{{ .Values.nsPrefix }}-docker-registry-key"