Revert "Refactored code in an attempt to break dependency cycles"

This reverts commit 195af6e6b27c23c7beb98f4cd425e7d7ffff1ecd.
diff --git a/core/api/src/main/java/org/onlab/onos/net/device/DeviceMastershipAdminService.java b/core/api/src/main/java/org/onlab/onos/net/device/DeviceMastershipAdminService.java
index 3d31f37..78c9c39 100644
--- a/core/api/src/main/java/org/onlab/onos/net/device/DeviceMastershipAdminService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/device/DeviceMastershipAdminService.java
@@ -2,6 +2,7 @@
 
 import org.onlab.onos.cluster.NodeId;
 import org.onlab.onos.net.DeviceId;
+import org.onlab.onos.net.MastershipRole;
 
 /**
  * Service for administering the inventory of device masterships.
@@ -15,6 +16,6 @@
      * @param deviceId device identifier
      * @param role     requested role
      */
-    void setRole(NodeId instance, DeviceId deviceId, DeviceMastershipRole role);
+    void setRole(NodeId instance, DeviceId deviceId, MastershipRole role);
 
 }