[PATCH] xfstests: Convert all tests to use /bin/bash

[Eric Sandeen]

Dave Chinner wrote:
> 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 at fromorbit.com>

Seems fine,

Reviewed-by: Eric Sandeen <sandeen at sandeen.net>