Merge pull request #39164 from danwinship/networkpolicy-v1

Automatic merge from submit-queue

Move NetworkPolicy to v1

Move NetworkPolicy to v1

@kubernetes/sig-network-misc 

**Release note**:
```release-note
NetworkPolicy has been moved from `extensions/v1beta1` to the new
`networking.k8s.io/v1` API group. The structure remains unchanged from
the beta1 API.

The `net.beta.kubernetes.io/network-policy` annotation on Namespaces
to opt in to isolation has been removed. Instead, isolation is now
determined at a per-pod level, with pods being isolated if there is
any NetworkPolicy whose spec.podSelector targets them. Pods that are
targeted by NetworkPolicies accept traffic that is accepted by any of
the NetworkPolicies (and nothing else), and pods that are not targeted
by any NetworkPolicy accept all traffic by default.

Action Required:

When upgrading to Kubernetes 1.7 (and a network plugin that supports
the new NetworkPolicy v1 semantics), to ensure full behavioral
compatibility with v1beta1:

    1. In Namespaces that previously had the "DefaultDeny" annotation,
       you can create equivalent v1 semantics by creating a
       NetworkPolicy that matches all pods but does not allow any
       traffic:

           kind: NetworkPolicy
           apiVersion: networking.k8s.io/v1
           metadata:
             name: default-deny
           spec:
             podSelector:

       This will ensure that pods that aren't match by any other
       NetworkPolicy will continue to be fully-isolated, as they were
       before.

    2. In Namespaces that previously did not have the "DefaultDeny"
       annotation, you should delete any existing NetworkPolicy
       objects. These would have had no effect before, but with v1
       semantics they might cause some traffic to be blocked that you
       didn't intend to be blocked.
```

test/integration/etcd/etcd_storage_path_test.go

@@ -219,6 +219,14 @@ var etcdStorageData = map[schema.GroupVersionResource]struct {
 	},
 	// --
 
+	// k8s.io/kubernetes/pkg/apis/networking/v1
+	gvr("networking.k8s.io", "v1", "networkpolicies"): {
+		stub:             `{"metadata": {"name": "np2"}, "spec": {"podSelector": {"matchLabels": {"e": "f"}}}}`,
+		expectedEtcdPath: "/registry/networkpolicies/etcdstoragepathtestnamespace/np2",
+		expectedGVK:      gvkP("extensions", "v1beta1", "NetworkPolicy"),
+	},
+	// --
+
 	// k8s.io/kubernetes/pkg/apis/policy/v1beta1
 	gvr("policy", "v1beta1", "poddisruptionbudgets"): {
 		stub:             `{"metadata": {"name": "pdb1"}, "spec": {"selector": {"matchLabels": {"anokkey": "anokvalue"}}}}`,