change the version in the yaml file

cluster/gce/coreos/kube-manifests/addons/cluster-monitoring/google/heapster-controller.yaml

 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
-  name: heapster-v1.1.0
+  name: heapster-v1.2.0
   namespace: kube-system
   labels:
     k8s-app: heapster
     kubernetes.io/cluster-service: "true"
-    version: v1.1.0
+    version: v1.2.0
 spec:
   replicas: 1
   selector:
     matchLabels:
       k8s-app: heapster
-      version: v1.1.0
+      version: v1.2.0
   template:
     metadata:
       labels:
         k8s-app: heapster
-        version: v1.1.0
+        version: v1.2.0
     spec:
       containers:
         - image: gcr.io/google_containers/heapster:v1.2.0
@@ -87,7 +87,7 @@ spec:
             - --memory=300Mi
             - --extra-memory=4Mi
             - --threshold=5
-            - --deployment=heapster-v1.1.0
+            - --deployment=heapster-v1.2.0
             - --container=heapster
             - --poll-period=300000
         - image: gcr.io/google_containers/addon-resizer:1.0
@@ -115,7 +115,7 @@ spec:
             - --memory=300Mi
             - --extra-memory=307200Ki
             - --threshold=5
-            - --deployment=heapster-v1.1.0
+            - --deployment=heapster-v1.2.0
             - --container=eventer
             - --poll-period=300000
       volumes:

cluster/gce/coreos/kube-manifests/addons/cluster-monitoring/influxdb/heapster-controller.yaml

 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
-  name: heapster-v1.1.0
+  name: heapster-v1.2.0
   namespace: kube-system
   labels:
     k8s-app: heapster
     kubernetes.io/cluster-service: "true"
-    version: v1.1.0
+    version: v1.2.0
 spec:
   replicas: 1
   selector:
     matchLabels:
       k8s-app: heapster
-      version: v1.1.0
+      version: v1.2.0
   template:
     metadata:
       labels:
         k8s-app: heapster
-        version: v1.1.0
+        version: v1.2.0
     spec:
       containers:
         - image: gcr.io/google_containers/heapster:v1.2.0
@@ -73,7 +73,7 @@ spec:
             - --memory=300Mi
             - --extra-memory=4Mi
             - --threshold=5
-            - --deployment=heapster-v1.1.0
+            - --deployment=heapster-v1.2.0
             - --container=heapster
             - --poll-period=300000
         - image: gcr.io/google_containers/addon-resizer:1.0
@@ -101,6 +101,6 @@ spec:
             - --memory=300Mi
             - --extra-memory=307200Ki
             - --threshold=5
-            - --deployment=heapster-v1.1.0
+            - --deployment=heapster-v1.2.0
             - --container=eventer
             - --poll-period=300000

cluster/gce/coreos/kube-manifests/addons/cluster-monitoring/standalone/heapster-controller.yaml

 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
-  name: heapster-v1.1.0
+  name: heapster-v1.2.0
   namespace: kube-system
   labels:
     k8s-app: heapster
     kubernetes.io/cluster-service: "true"
-    version: v1.1.0
+    version: v1.2.0
 spec:
   replicas: 1
   selector:
     matchLabels:
       k8s-app: heapster
-      version: v1.1.0
+      version: v1.2.0
   template:
     metadata:
       labels:
         k8s-app: heapster
-        version: v1.1.0
+        version: v1.2.0
     spec:
       containers:
         - image: gcr.io/google_containers/heapster:v1.2.0
@@ -58,6 +58,6 @@ spec:
             - --memory=300Mi
             - --extra-memory=4Mi
             - --threshold=5
-            - --deployment=heapster-v1.1.0
+            - --deployment=heapster-v1.2.0
             - --container=heapster
             - --poll-period=300000