Fixed findbugs

Author: chiacyu

hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/common/transport/server/ratis/TestContainerStateMachine.java

@@ -51,6 +51,7 @@
 import org.apache.ratis.proto.RaftProtos;
 import org.apache.ratis.protocol.Message;
 import org.apache.ratis.protocol.RaftGroup;
+import org.apache.ratis.protocol.RaftGroupId;
 import org.apache.ratis.protocol.RaftPeer;
 import org.apache.ratis.server.DivisionInfo;
 import org.apache.ratis.server.RaftServer;
@@ -101,6 +102,8 @@ public void setup() throws IOException {
     when(division.getInfo()).thenReturn(info);
     when(info.isLeader()).thenReturn(isLeader);
     when(ratisServer.getServerDivision(any())).thenReturn(division);
+    stateMachine = new ContainerStateMachine(null,
+        RaftGroupId.randomId(), dispatcher, controller, executor, ratisServer, conf, "containerOp");
   }