Change image tag to 'master' for development

Change-Id: Iced1eb4e0e1455f8be269075f71158f5ac6c471a
diff --git a/xos-core/templates/tosca-deployment.yaml b/xos-core/templates/tosca-deployment.yaml
index 4957ef4..5dd61f2 100644
--- a/xos-core/templates/tosca-deployment.yaml
+++ b/xos-core/templates/tosca-deployment.yaml
@@ -17,20 +17,21 @@
 metadata:
   name: xos-tosca
   labels:
-    app: xos-tosca    
+    app: xos-tosca
 spec:
   replicas: 1
   template:
     metadata:
       labels:
-        app: xos-tosca    
+        app: xos-tosca
     spec:
       containers:
-        - name: xos-tosca 
+        - name: xos-tosca
           image: {{ .Values.pull_docker_registry }}{{ .Values.images.xos_tosca.repository }}:{{ .Values.images.xos_tosca.tag }}
+          imagePullPolicy: {{ .Values.images.xos_tosca.pullPolicy }}
           ports:
             - containerPort: 9102
-              port: 9102 
+              port: 9102
               protocol: TCP
           volumeMounts:
             - name: secret-volume
@@ -44,7 +45,7 @@
             secretName: cert-chain-secret
         - name: xos-core-config
           configMap:
-            name: xos-tosca 
-            items: 
+            name: xos-tosca
+            items:
              - key: config
                path: config/xos-tosca.config.yaml