Make the old resource APIs deprecated

Change-Id: Ib3158f3f363c928353f6ef82aac98a8e4e589953
diff --git a/core/api/src/main/java/org/onosproject/net/resource/link/package-info.java b/core/api/src/main/java/org/onosproject/net/resource/link/package-info.java
index b10e4ba..f374d77 100644
--- a/core/api/src/main/java/org/onosproject/net/resource/link/package-info.java
+++ b/core/api/src/main/java/org/onosproject/net/resource/link/package-info.java
@@ -17,5 +17,11 @@
 /**
  * Services for reserving links and their capacity as network resources,
  * e.g. bandwidth, lambdas.
+ * <p>
+ * Note: Classes under the package will be remove.
+ * Developers should not use the classes.
+ * This package is marked as deprecated in Emu Release.
+ * </p>
  */
+@Deprecated
 package org.onosproject.net.resource.link;