ext4/053: Test remount without changing mount options

ext4/053: Test remount without changing mount options

With the recent ext4 mount api change we discovered a bugs that weren't
caught by this test. It was triggered by remounting the file system
either with the same mount options, or without specifying any mount
options at all. In this case we would expect the original mount options
to remain the same, however this was either not the case, or the remount
failed.

Add a remount test after a regular mount. Remount once with specifying
the original mount option and remount second time without specifying
anything. Test the active options after each test.

Additionally include all the combinations of data= options in the
remount test for the sake of completeness.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>