Fixing license header in a file added during the LibVirt refactor

- New class is MigrateKVMAsync

plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/MigrateKVMAsync.java

@@ -1,3 +1,21 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
 package com.cloud.hypervisor.kvm.resource;
 
 import java.util.concurrent.Callable;
@@ -35,4 +53,4 @@ public class MigrateKVMAsync implements Callable<Domain> {
             return dm.migrate(dconn, 1 << 0|1 << 11, dxml, vmName, "tcp:" + destIp, libvirtComputingResource.getMigrateSpeed());
         }
     }
-}
+}