Added missing license header

Signed-off-by:Ondrej Mihalyi <ondrej.mihalyi@gmail.com>

perform_release/deploy_to_maven_central.sh

@@ -1,3 +1,22 @@
+#######################################################################
+## Copyright (c) 2016-2017 Contributors to the Eclipse Foundation
+##
+## See the NOTICE file(s) distributed with this work for additional
+## information regarding copyright ownership.
+##
+## 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.
+#######################################################################
+
 ### Deploy to maven central
 ##############################