Fix permissions on service wrapper script #176

Job	Run time
build-push-base / build-push	28s
build-push-base-java / build-push	36s
build-push-web / build-push	40s
build-push-prosody / build-push	32s
build-push-jvb / build-push	38s
build-push-jibri / build-push	1m 57s
build-push-jigasi / build-push	34s
build-push-jicofo / build-push	25s
	5m 50s

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