Copyright update to 2000-2018

Signed-off-by: balaskoa <Jeno.Balasko@ericsson.com>

Socket_API_CNL113686.tpd

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
- Copyright (c) 2015 Ericsson
+ Copyright (c) 2000-2018 Ericsson Telecom AB
 
   All rights reserved. This program and the accompanying materials
   are made available under the terms of the Eclipse Public License v2.0

src/Socket_API.grp

 <!--
 /******************************************************************************
-* Copyright (c) 2010, 2015  Ericsson AB
+* Copyright (c) 2000-2018 Ericsson Telecom AB
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at

src/Socket_API_Definitions.ttcn

 /******************************************************************************
-* Copyright (c) 2010, 2015  Ericsson AB
+* Copyright (c) 2000-2018 Ericsson Telecom AB
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at