Add a kubernetes port and pod mapper with sync/purge rules CLIs

Change-Id: I89ed29e4357b84345f95fddf81ab7156715d7c82
diff --git a/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/cli/K8sPurgeStateCommand.java b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/cli/K8sPurgeStateCommand.java
new file mode 100644
index 0000000..7b87d7e
--- /dev/null
+++ b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/cli/K8sPurgeStateCommand.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.k8snetworking.cli;
+
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.k8snetworking.api.K8sEndpointsAdminService;
+import org.onosproject.k8snetworking.api.K8sNetworkAdminService;
+import org.onosproject.k8snetworking.api.K8sPodAdminService;
+import org.onosproject.k8snetworking.api.K8sServiceAdminService;
+
+/**
+ * Purges all existing kubernetes states.
+ */
+@Service
+@Command(scope = "onos", name = "k8s-purge-states",
+        description = "Purges all kubernetes states")
+public class K8sPurgeStateCommand extends AbstractShellCommand {
+    @Override
+    protected void doExecute() {
+        get(K8sPodAdminService.class).clear();
+        get(K8sNetworkAdminService.class).clear();
+        get(K8sEndpointsAdminService.class).clear();
+        get(K8sServiceAdminService.class).clear();
+    }
+}