Add License information in every source file or script.

Signed-off-by: Alex Stancu <alexandru.stancu@highstreet-technologies.com>
Change-Id: Iee9b882b79bba62232f998a0cfea0932872c2ccf
diff --git a/ntsimulator/src/ves-messages/heartbeat.c b/ntsimulator/src/ves-messages/heartbeat.c
index fce544c..a5785e5 100644
--- a/ntsimulator/src/ves-messages/heartbeat.c
+++ b/ntsimulator/src/ves-messages/heartbeat.c
@@ -1,9 +1,19 @@
-/*
- * heartbeat.c
- *
- *  Created on: Oct 24, 2019
- *      Author: parallels
- */
+/*************************************************************************
+*
+* Copyright 2019 highstreet technologies GmbH and others
+*
+* Licensed 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.
+***************************************************************************/
 
 #include <stdio.h>
 #include <stdlib.h>