generic/019: skip test when there is no journal

generic/019: skip test when there is no journal

This test checks a filesystem's ability to recover from a noncritical
disk failure (e.g. journal replay) without becoming inconsistent.  This
isn't true for any filesystem that doesn't have a journal, so we should
skip the test on those platforms.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zorro Lang <zlang@kernel.org>