Merge pull request #7879 from zalando-incubator/container-registry.zalando.net/teapot/pause

pause: Update to version 3.7-master-21

Author: katyanna

cluster/manifests/kube-cluster-autoscaler/buffer-pods-deployment.yaml

@@ -35,7 +35,7 @@ spec:
       terminationGracePeriodSeconds: 0
       containers:
       - name: pause
-        image: container-registry.zalando.net/teapot/pause:3.4.1-master-18
+        image: container-registry.zalando.net/teapot/pause:3.7-master-21
         resources:
           limits:
             cpu: {{$data.Cluster.ConfigItems.autoscaling_buffer_cpu}}