Adding @Beta to Intent API classes and interfaces

Change-Id: I02a3c1a678cb4e75b5bba9a33117a9dccb6fc0f5
diff --git a/core/api/src/main/java/org/onosproject/net/intent/PathIntent.java b/core/api/src/main/java/org/onosproject/net/intent/PathIntent.java
index 2bdb4cf..dffbabf 100644
--- a/core/api/src/main/java/org/onosproject/net/intent/PathIntent.java
+++ b/core/api/src/main/java/org/onosproject/net/intent/PathIntent.java
@@ -17,6 +17,7 @@
 
 import java.util.List;
 
+import com.google.common.annotations.Beta;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.net.Link;
 import org.onosproject.net.Path;
@@ -32,6 +33,7 @@
 /**
  * Abstraction of explicitly path specified connectivity intent.
  */
+@Beta
 public class PathIntent extends ConnectivityIntent {
 
     private final Path path;