This is the regression test for the virtual size mismatch issue between
target and source images.

[ kwolf: Added test_unaligned_with_update ]
Signed-off-by: NFam Zheng <famz@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NJeff Cody <jcody@redhat.com>