Add docker/default seccomp to control plane and addons

* Annotate pods, deployments, and daemonsets to start containers
with the Docker runtime's default seccomp profile
* Overrides Kubernetes default behavior which started containers
with seccomp=unconfined
* https://docs.docker.com/engine/security/seccomp/#pass-a-profile-for-a-container

addons/nginx-ingress/google-cloud/default-backend/deployment.yaml

@@ -14,6 +14,8 @@ spec:
       labels:
         name: default-backend
         phase: prod
+      annotations:
+        seccomp.security.alpha.kubernetes.io/pod: 'docker/default'
     spec:
       containers:
         - name: default-backend