xfs/005: filter _scratch_mount output to match golden image

Failure message of mount has been changed since util-linux v2.21, to
something like:

mount: mount /dev/sda5 on /mnt/scratch failed: Structure needs cleaning

Filter the output to match the golden image for newer mount binary so
that both old and new version of mount work correctly.

Signed-off-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

tests/xfs/005

@@ -40,6 +40,11 @@ _cleanup()
     rm -f $tmp.*
 }
 
+filter_mount()
+{
+	sed -e "s/mount .* failed: //"
+}
+
 # get standard environment, filters and checks
 . ./common/rc
 . ./common/filter
@@ -59,7 +64,7 @@ _scratch_mkfs_xfs -m crc=1 >> $seqres.full 2>&1 || _fail "mkfs failed"
 $XFS_IO_PROG -c "pwrite 224 4" $SCRATCH_DEV | _filter_xfs_io
 
 # should FAIL, the crc is bad; golden output contains mount failure
-_scratch_mount
+_scratch_mount 2>&1 | filter_mount
 
 # success, all done
 status=0