LU-5823 clio: add cl_object_find_cbdata()

LU-5823 clio: add cl_object_find_cbdata()

* Delete obsolete obd_ops::o_find_cbdata interface.
* Delete obsolete obd_ops::o_change_cbdata interface.
* Add cl_object_find_cbdata().

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Change-Id: I2e64e2e9a112783cb5c66bf4580fd1aec794417b
Reviewed-on: http://review.whamcloud.com/12494
Tested-by: Jenkins
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>