Merge pull request #55509 from tallclair/psp-addons

Automatic merge from submit-queue (batch tested with PRs 54602, 54877, 55243, 55509, 55128). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

PodSecurityPolicies for addons

**What this PR does / why we need it**:

1. Colocate addon PodSecurityPolicy config with the addons (in a `podsecuritypolicies` subdirectory). 
2. Add policies for addons that are currently missing policies (not in the default GCE suite)
3. Remove HostPath SSL certs from several heapster deployments, so that heapster doesn't require a special PSP

**Which issue(s) this PR fixes**:
#43538

**Release note**:
```release-note
- Add PodSecurityPolicies for cluster addons
- Remove SSL cert HostPath volumes from heapster addons
```

cluster/addons/fluentd-elasticsearch/podsecuritypolicies/es-psp-binding.yaml

@@ -0,0 +1,16 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: gce:podsecuritypolicy:elasticsearch-logging
+  namespace: kube-system
+  labels:
+    addonmanager.kubernetes.io/mode: Reconcile
+    kubernetes.io/cluster-service: "true"
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: gce:podsecuritypolicy:privileged
+subjects:
+- kind: ServiceAccount
+  name: elasticsearch-logging
+  namespace: kube-system