fix env.test for ubuntu

git-svn-id: svn+ssh://svn.cern.ch/reps/lcgsoft/trunk/lcgcmake@7440 4525493e-7705-40b1-a816-d608a930855b

cmake/scripts/check_env_scripts.sh

-#!/bin/sh
+#!/bin/bash
 
 tmp="$(mktemp)"
 tmp1="$(mktemp)"