LU-8216 ldiskfs: fix journal quota files

LU-8216 ldiskfs: fix journal quota files

When we hit Lustre crash, e2fsck will always
complains Quota accounting mismatch, and sometimes
differences are huge.

Problems are we don't journal quota updates properly,
and with current codes quota files will be only
journaled when syncing filesystem,
that only happen by sync call or unmounting.

Signed-off-by: Wang Shilong <wshilong@ddn.com>
Change-Id: I94c148a6b48f2464e96320bbadc88a3c234eacb0
Reviewed-on: http://review.whamcloud.com/20503
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>