common: Add _require_no_xfs_bug_on_assert and factor out filter_xfs_dmesg

common: Add _require_no_xfs_bug_on_assert and factor out filter_xfs_dmesg

1) Introduce _require_no_xfs_bug_on_assert helper to check if XFS is
   built with CONFIG_XFS_ASSERT_FATAL, and call _require_no_xfs_debug
   if bug_on_assert is not available.

2) Apply _require_no_xfs_bug_on_assert in xfs/098 and xfs/115.

3) Move filter_xfs_dmesg from xfs/098 to common/filter, and rename
   it as _filter_assert_dmesg.

[eguan: update comment and _notrun message a bit]

Signed-off-by: xiao yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>