LU-1330 obdclass: splits server-side procfs handling

LU-1330 obdclass: splits server-side procfs handling

Moves some server-side procfs routines to lprocfs_status_server.c.
Only compiles lprocfs_jobstats.c for server.

Signed-off-by: Liu Xuezhao <xuezhao.liu@emc.com>
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: I32d5feda324bf76386a176e8bd78d74e59643f43
Reviewed-on: http://review.whamcloud.com/2677
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>