Detangling incubator: virtual nets, tunnels, resource labels, oh my

- virtual networking moved to /apps/virtual; with CLI & REST API
- tunnels and labels moved to /apps/tunnel; with CLI & REST API; UI disabled for now
- protobuf/models moved to /core/protobuf/models
- defunct grpc/rpc registry stuff left under /graveyard
- compile dependencies on /incubator moved to respective modules for compilation
- run-time dependencies will need to be re-tested for dependent apps

- /graveyard will be removed in not-too-distant future

Change-Id: I0a0b995c635487edcf95a352f50dd162186b0b39
diff --git a/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/cli/TenantAddCommand.java b/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/cli/TenantAddCommand.java
new file mode 100644
index 0000000..a449afb
--- /dev/null
+++ b/apps/virtual/app/src/main/java/org/onosproject/incubator/net/virtual/cli/TenantAddCommand.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2016-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.incubator.net.virtual.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+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.net.TenantId;
+import org.onosproject.incubator.net.virtual.VirtualNetworkAdminService;
+
+/**
+ * Creates a new virtual network tenant.
+ */
+@Service
+@Command(scope = "onos", name = "vnet-add-tenant",
+        description = "Creates a new virtual network tenant.")
+
+public class TenantAddCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "id", description = "Tenant ID",
+            required = true, multiValued = false)
+    String id = null;
+
+    @Override
+    protected void doExecute() {
+        VirtualNetworkAdminService service = get(VirtualNetworkAdminService.class);
+        service.registerTenantId(TenantId.tenantId(id));
+        print("Tenant successfully added.");
+    }
+}