use proper shebang line in autosupport script, at proper location (bug #4640)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6021 65c4cc65-6c06-0410-ace0-fbb531ad65f3

contrib/scripts/autosupport

@@ -1,3 +1,4 @@
+#!/bin/sh
 #
 # Collect support information
 #
@@ -8,7 +9,6 @@
 # Distributed under the terms of the GNU General Public
 # License
 #
-#!/bin/bash
 
 OUTPUT=$HOME/digiuminfo