LU-2200 tests: conf-sanity/32 does not work with IB

LU-2200 tests: conf-sanity/32 does not work with IB

Check if running over infiniband and skip test if that is the case.

Signed-off-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Change-Id: I45ca12c15935df268c2699feb7a135b80782664c
Reviewed-on: http://review.whamcloud.com/4607
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Yu Jian <yujian@whamcloud.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>