Use App Mesh Prometheus in kustomization

kustomize/README.md

@@ -25,7 +25,7 @@ Install Flagger for AWS App Mesh:
 kubectl apply -k github.com/weaveworks/flagger//kustomize/appmesh
 ```
 
-This deploys Flagger and Prometheus (configured to scrape the App Mesh Envoy sidecars) in the `appmesh-system` namespace.
+This deploys Flagger in the `appmesh-system` namespace and sets the metrics server URL to App Mesh Prometheus instance.
 
 Install Flagger for Linkerd:
 

kustomize/appmesh/kustomization.yaml

@@ -1,6 +1,5 @@
 namespace: appmesh-system
 bases:
   - ../base/flagger
-  - ../base/prometheus
 patchesStrategicMerge:
   - patch.yaml

kustomize/appmesh/patch.yaml

@@ -10,7 +10,20 @@ spec:
           args:
             - -log-level=info
             - -mesh-provider=appmesh
-            - -metrics-server=http://flagger-prometheus:9090
+            - -metrics-server=http://appmesh-prometheus:9090
             - -slack-user=flagger
             - -slack-channel=
             - -slack-url=
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: flagger
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: flagger
+subjects:
+  - kind: ServiceAccount
+    name: flagger
+    namespace: appmesh-system