Support GATEWAY type node bootstrapping

- Create router bridge and pactch port to integration bridge for gateway node
- Refactored to listen map event for node add/update
- Added CLIs

Change-Id: Id653f2a2c01d94036f77e6ce1b1230111f3dbbb1
diff --git a/apps/openstacknode/src/main/java/org/onosproject/openstacknode/cli/OpenstackNodeInitCommand.java b/apps/openstacknode/src/main/java/org/onosproject/openstacknode/cli/OpenstackNodeInitCommand.java
new file mode 100644
index 0000000..8f4dbb1
--- /dev/null
+++ b/apps/openstacknode/src/main/java/org/onosproject/openstacknode/cli/OpenstackNodeInitCommand.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2016-present 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.openstacknode.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.openstacknode.OpenstackNode;
+import org.onosproject.openstacknode.OpenstackNodeService;
+
+import java.util.NoSuchElementException;
+
+/**
+ * Initializes nodes for OpenStack node service.
+ */
+@Command(scope = "onos", name = "openstack-node-init",
+        description = "Initializes nodes for OpenStack node service")
+public class OpenstackNodeInitCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "hostnames", description = "Hostname(s)",
+            required = true, multiValued = true)
+    private String[] hostnames = null;
+
+    @Override
+    protected void execute() {
+        OpenstackNodeService nodeService = AbstractShellCommand.get(OpenstackNodeService.class);
+
+        for (String hostname : hostnames) {
+            OpenstackNode node;
+            try {
+                node = nodeService.nodes()
+                        .stream()
+                        .filter(n -> n.hostname().equals(hostname))
+                        .findFirst().get();
+            } catch (NoSuchElementException e) {
+                print("Unable to find %s", hostname);
+                continue;
+            }
+
+            nodeService.addOrUpdateNode(node);
+        }
+    }
+}