CORD-280 Added CLIs for cordvtn

Change-Id: I76e0358ccf3f71ad7cb1f9ba048616f0177d7666
diff --git a/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/OvsdbNodeDeleteCommand.java b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/OvsdbNodeDeleteCommand.java
new file mode 100644
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+++ b/apps/cordvtn/src/main/java/org/onosproject/cordvtn/cli/OvsdbNodeDeleteCommand.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.cordvtn.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.cordvtn.CordVtnService;
+import org.onosproject.cordvtn.OvsdbNode;
+
+import java.util.NoSuchElementException;
+
+/**
+ * Deletes OVSDB nodes from cordvtn.
+ */
+@Command(scope = "onos", name = "ovsdb-delete",
+        description = "Deletes OVSDB nodes from cordvtn")
+public class OvsdbNodeDeleteCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "hosts", description = "Hostname(s) or IP(s)",
+            required = true, multiValued = true)
+    private String[] hosts = null;
+
+    @Override
+    protected void execute() {
+        CordVtnService service = AbstractShellCommand.get(CordVtnService.class);
+
+        for (String host : hosts) {
+            OvsdbNode ovsdb;
+            try {
+                ovsdb = service.getNodes().stream()
+                        .filter(node -> node.host().equals(host))
+                        .findFirst().get();
+
+            } catch (NoSuchElementException e) {
+                print("Unable to find %s", host);
+                continue;
+            }
+
+            service.deleteNode(ovsdb);
+        }
+    }
+}