xfstests: Convert all tests to use /bin/bash

While most tests use /bin/sh, they are dependent on /bin/sh being a
bash shell.  Convert all the tests to execute via /bin/bash as it is
much, much simpler than trying to debug and remove all the bashisms
throughout the test code.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>

093

@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /bin/bash
 # FS QA Test No. 093
 #
 # Test out for IRIX the removal of file capabilities when
@@ -75,7 +75,7 @@ user=`grep ':all=:all=' /etc/capability | tail -1 | $AWK_PROG -F: '{print $1}'`
 uid=`grep $user /etc/passwd | $AWK_PROG -F: '{print $3}'`
 
 cat >$tmp.append <<EOF
-#!/bin/sh
+#!/bin/bash
 echo data >>$file
 EOF
 chmod ugo+x $tmp.append