LU-11814 obdcalss: ensure LCT_QUIESCENT take sync

LU-11814 obdcalss: ensure LCT_QUIESCENT take sync

Add locking in lu_device_init ensure LCT_QUIESCENT
operating can be seen on other thread in parallel
mounting. Also add extra checking before unset the
flag to make sure we don't do it after device has
been started.

(osd_handler.c:7730:osd_device_init0()) ASSERTION( info ) failed:
(osd_handler.c:7730:osd_device_init0()) LBUG
Pid: 28098, comm: mount.lustre 3.10.0-1062.9.1.el7_lustre.x86_64
Call Trace:
 libcfs_call_trace+0x8c/0xc0 [libcfs]
 lbug_with_loc+0x4c/0xa0 [libcfs]
 osd_device_alloc+0x778/0x8f0 [osd_ldiskfs]
 obd_setup+0x129/0x2f0 [obdclass]
 class_setup+0x48f/0x7f0 [obdclass]
 class_process_config+0x190f/0x2830 [obdclass]
 do_lcfg+0x258/0x500 [obdclass]
 lustre_start_simple+0x88/0x210 [obdclass]
 server_fill_super+0xf55/0x1890 [obdclass]
 lustre_fill_super+0x498/0x990 [obdclass]
 mount_nodev+0x4f/0xb0
 lustre_mount+0x18/0x20 [obdclass]
 mount_fs+0x3e/0x1b0
 vfs_kern_mount+0x67/0x110
 do_mount+0x1ef/0xce0
 SyS_mount+0x83/0xd0
 system_call_fastpath+0x25/0x2a
 0xffffffffffffffff
 Kernel panic - not syncing: LBUG

Signed-off-by: Yang Sheng <ys@whamcloud.com>
Change-Id: Iccf3d545a5fc7c4a3b2320f1c7c7edcfbc1d17bb
Reviewed-on: https://review.whamcloud.com/38416
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>