Moving LabelResourceManager to incubator

Breaking apart resource package into {device, link, label}
Refactored cluster serializers so they are visible

Change-Id: I71051bcd5e790ae6abeb154bf58286e584c32858
diff --git a/incubator/pom.xml b/incubator/pom.xml
index 0eb6e89..ca8cd7e 100644
--- a/incubator/pom.xml
+++ b/incubator/pom.xml
@@ -42,6 +42,13 @@
             <groupId>org.onosproject</groupId>
             <artifactId>onos-api</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-api</artifactId>
+            <classifier>tests</classifier>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>