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/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainService.java b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainService.java
new file mode 100644
index 0000000..0c010de
--- /dev/null
+++ b/apps/tunnel/api/src/main/java/org/onosproject/incubator/net/domain/IntentDomainService.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2018-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.domain;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.event.ListenerService;
+import org.onosproject.net.DeviceId;
+
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Service for that maintains a graph of intent domains and a registry of intent
+ * domain providers.
+ */
+@Beta
+public interface IntentDomainService
+        extends ListenerService<IntentDomainEvent, IntentDomainListener> {
+
+    /**
+     * Returns the intent domain for the given id.
+     *
+     * @param id id to look up
+     * @return the intent domain; null if none found
+     */
+    IntentDomain getDomain(IntentDomainId id);
+
+    /**
+     * Returns a set of all intent domains.
+     *
+     * @return set of intent domains
+     */
+    Set<IntentDomain> getDomains();
+
+    /**
+     * Returns any network domains associated with the given device id.
+     *
+     * @param deviceId device id to look up
+     * @return set of intent domain
+     */
+    Set<IntentDomain> getDomains(DeviceId deviceId);
+
+    /**
+     * Requests an intent primitive from the intent domain.
+     *
+     * @param domainId id of target domain
+     * @param primitive intent primitive
+     * @return set of intent resources that satisfy the primitive
+     */
+    List<IntentResource> request(IntentDomainId domainId, IntentPrimitive primitive);
+
+    /**
+     * Submits an intent resource to the intent domain for installation.
+     *
+     * @param domainId id of target domain
+     * @param resource intent resource
+     */
+    void submit(IntentDomainId domainId, IntentResource resource);
+}
+
+
+
+
+