LU-3105 osc: remove capa support

LU-3105 osc: remove capa support

Remove capa support from the OSC layer. Convert the OBD getattr and
setattr paths to use struct obdo rather than struct obd_info. Remove
the oi_policy, oi_oa, and oi_capa members from struct obd_info.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I3c7b3a8b5a5f330291e0096f65782f028fd4b5d8
Reviewed-on: http://review.whamcloud.com/14640
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>