ensure managix scripts use bash

Change-Id: If73a9e4d13df7c0dbb77d5c0376f89b85510e30c
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/167
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ian Maxon <imaxon@uci.edu>
diff --git a/asterix-installer/src/main/resources/scripts/validate_ssh.sh b/asterix-installer/src/main/resources/scripts/validate_ssh.sh
index 998b382..9415a58 100644
--- a/asterix-installer/src/main/resources/scripts/validate_ssh.sh
+++ b/asterix-installer/src/main/resources/scripts/validate_ssh.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 #/*
 # Copyright 2009-2013 by The Regents of the University of California
 # Licensed under the Apache License, Version 2.0 (the "License");