LU-9498 osp: revert till a fix

LU-9498 osp: revert till a fix

Revert "LU-8367 osp: orphan cleanup do not wait for reserved"

LU-9498 was discovered with soak testing, the root cause is unknown
at the moment.

This reverts commit 1b3028ab142a1f605e6274a6019bb39d89ae8d25.

Change-Id: I65016876f3e42345a06194771c9731e28a850adc
Signed-off-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-on: https://review.whamcloud.com/27447
Tested-by: Jenkins
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>