LU-7442 tests: Load modules on MDS/OSS in conf-sanity test_41c

LU-7442 tests: Load modules on MDS/OSS in conf-sanity test_41c

Lustre modules were not present after "cleanup" in test_41c.
So test was failing while setting the "fail_loc" param on the
MDS/OSS. This patch adds "load_modules" after "cleanup".

Test-Parameters: trivial testlist=conf-sanity

Seagate-bug-id: MRP-2711
Signed-off-by: Ashish Maurya <ashish.maurya@seagate.com>
Signed-off-by: Hema Yarramilli <hema.yarramilli@seagate.com>
Change-Id: Icad9410765121bd17f00761477066f9cebf8f686
Reviewed-on: http://review.whamcloud.com/17301
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>