[FLINK-6379] Remove internal methods from MesosResourceManagerGateway

Some internal methods which are required for the interplay between the TaskMonitor,
LaunchCoordinator and the MesosResourceManager were exposed as RPC methods. In order
to keep the RPC interface as lean as possible, these methods have been removed.

Fix checkstyle violations

flink-mesos/src/main/java/org/apache/flink/mesos/runtime/clusterframework/MesosResourceManagerGateway.java → flink-mesos/src/main/java/org/apache/flink/mesos/runtime/clusterframework/MesosResourceManagerActions.java

@@ -20,20 +20,21 @@
 
 import org.apache.flink.mesos.scheduler.LaunchCoordinator;
 import org.apache.flink.mesos.scheduler.ReconciliationCoordinator;
-import org.apache.flink.mesos.scheduler.SchedulerGateway;
 import org.apache.flink.mesos.scheduler.TaskMonitor;
 import org.apache.flink.mesos.scheduler.messages.AcceptOffers;
-import org.apache.flink.runtime.resourcemanager.ResourceManagerGateway;
 
 /**
- * The {@link MesosResourceManager}'s RPC gateway interface.
+ * Actions defined by the MesosResourceManager.
+ *
+ * <p>These are called by the MesosResourceManager components such
+ * as {@link LaunchCoordinator}, and {@link TaskMonitor}.
  */
-public interface MesosResourceManagerGateway extends ResourceManagerGateway, SchedulerGateway {
+public interface MesosResourceManagerActions {
 
 	/**
 	 * Accept the given offers as advised by the launch coordinator.
 	 *
-	 * Note: This method is a callback for the {@link LaunchCoordinator}.
+	 * <p>Note: This method is a callback for the {@link LaunchCoordinator}.
 	 *
 	 * @param offersToAccept Offers to accept from Mesos
 	 */
@@ -42,7 +43,7 @@ public interface MesosResourceManagerGateway extends ResourceManagerGateway, Sch
 	/**
 	 * Trigger reconciliation with the Mesos master.
 	 *
-	 * Note: This method is a callback for the {@link TaskMonitor}.
+	 * <p>Note: This method is a callback for the {@link TaskMonitor}.
 	 *
 	 * @param reconciliationRequest Message containing the tasks which shall be reconciled
 	 */
@@ -51,7 +52,7 @@ public interface MesosResourceManagerGateway extends ResourceManagerGateway, Sch
 	/**
 	 * Notify that the given Mesos task has been terminated.
 	 *
-	 * Note: This method is a callback for the {@link TaskMonitor}.
+	 * <p>Note: This method is a callback for the {@link TaskMonitor}.
 	 *
 	 * @param terminatedTask Message containing the terminated task
 	 */

flink-mesos/src/main/java/org/apache/flink/mesos/runtime/clusterframework/store/MesosWorkerStore.java

@@ -19,6 +19,7 @@
 package org.apache.flink.mesos.runtime.clusterframework.store;
 
 import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
+
 import org.apache.mesos.Protos;
 
 import java.io.Serializable;