ONOS-2296: Tag @Beta to DeviceResourceService

Change-Id: I133d28da7bfd12659fba1c3ec4af72341d0420a9
diff --git a/core/api/src/main/java/org/onosproject/net/resource/device/DeviceResourceService.java b/core/api/src/main/java/org/onosproject/net/resource/device/DeviceResourceService.java
index 8813b5b..5468dfb 100644
--- a/core/api/src/main/java/org/onosproject/net/resource/device/DeviceResourceService.java
+++ b/core/api/src/main/java/org/onosproject/net/resource/device/DeviceResourceService.java
@@ -15,6 +15,7 @@
  */
 package org.onosproject.net.resource.device;
 
+import com.google.common.annotations.Beta;
 import org.onosproject.net.Port;
 import org.onosproject.net.intent.Intent;
 import org.onosproject.net.intent.IntentId;
@@ -24,6 +25,7 @@
 /**
  * Service for providing device resources.
  */
+@Beta
 public interface DeviceResourceService {
     /**
      * Request a set of ports needed to satisfy the intent.