Ceph won't maintain the atime, so just skip the tests when the atime
is required.
URL: https://tracker.ceph.com/issues/53844 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Zorro Lang <zlang@redhat.com> Signed-off-by: Zorro Lang <zlang@kernel.org>