LU-10429 lod: LBUG lod_comp_ost_in_use()

LU-10429 lod: LBUG lod_comp_ost_in_use()

* print more debug info in lod_comp_ost_in_use().
* lod_alloc_qos() could possibly rollback too much items in the
  inuse array, leads to negative inuse array count number.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Change-Id: Ie3787f193468c6b783776e7df2ed4a6d54d8a12b
Reviewed-on: https://review.whamcloud.com/30889
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>