LU-2200 obdclass: be more careful processing server name

LU-2200 obdclass: be more careful processing server name

Because whole options line gets passed to exclude processing, don't
search from end of passed in argument to determine fsname at
beginning.

Re-enable conf-sanity/32 but do replace_nids on IB.

Test-Parameters: nettypes=o2ib testlist=conf-sanity
Signed-off-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Change-Id: Ibc43417cb71581198e3516c1e431c0d3f668f1e0
Reviewed-on: http://review.whamcloud.com/6197
Tested-by: Hudson
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>