staging: lustre: clio: use CIT_SETATTR for FSFILT_IOC_SETFLAGS

Add handling of inode flags to the handlers of CIT_SETATTR in lov and
osc. In the FSFILT_IOC_SETFLAGS case of ll_iocontrol() use
cl_setattr_ost() rather than obd_setattr_rqset() to set inode flags on
OST objects. Remove the then unused OBD API methods
obd_setattr_rqset() and obd_setattr_async() along with their
supporting functions.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5823
Reviewed-on: http://review.whamcloud.com/13422


Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>