Update manifests to use multi arch image

As now manifests are part of release we are free to update manifests.

FAQ.md

@@ -26,7 +26,8 @@ Suggested configuration:
 
 #### How to run metric-server on different architecture?
 
-There are officially built images for `amd64`, `arm`, `arm64`, `ppc64le`, `s390x`. Please update manifests to use specific image e.g. `k8s.gcr.io/metrics-server-s390x:v0.3.6`
+Starting from `v0.3.7` docker image `k8s.gcr.io/metrics-server` should support multiple architectures via Manifests List.
+List of supported architectures: `amd64`, `arm`, `arm64`, `ppc64le`, `s390x`.
 
 #### What Kubernetes versions are supported?
 

deploy/kubernetes/metrics-server-deployment.yaml

@@ -29,7 +29,7 @@ spec:
         emptyDir: {}
       containers:
       - name: metrics-server
-        image: k8s.gcr.io/metrics-server-amd64:v0.3.6
+        image: k8s.gcr.io/metrics-server:v0.3.7
         imagePullPolicy: IfNotPresent
         args:
           - --cert-dir=/tmp
@@ -47,4 +47,3 @@ spec:
           mountPath: /tmp
       nodeSelector:
         kubernetes.io/os: linux
-        kubernetes.io/arch: "amd64"