MRP-1440 tests: adjust test-framework to work with mpich2

Patch changes MACHINEFILE usage to be able to operate with mpich2

Signed-off-by: Elena Gryaznova <Elena_Gryaznova@xyratex.com>
Change-Id: If8cd022a8fc29ad4641c9bb88b90a7b38382fa7a
Reviewed-on: http://morpheus.xyus.xyratex.com:8443/gerrit/838
Tested-by: Jenkins
Reviewed-by: Alexey Lyashkov <Alexey_Lyashkov@xyratex.com>
Reviewed-by: Alexander Lezhoev <Alexander_Lezhoev@xyratex.com>
Reviewed-by: Vitaly Fertman <Vitaly_Fertman@xyratex.com>
MRP-1113 tests: add $mbench_OPTIONS to run_metabench()

Cray's metabench version requires -p <dictionary> paramenter.
Patch adds mbench_OPTIONS to metabench call.

Signed-off-by: Elena Gryaznova <Elena_Gryaznova@xyratex.com>
Change-Id: Id0157f540e68d8eebd9b4d9ab3b5ab869183ff2c
Reviewed-on: http://morpheus.xyus.xyratex.com:8443/gerrit/858
Tested-by: Jenkins
Reviewed-by: Vladimir Saveliev <vladimir_saveliev@xyratex.com>
Reviewed-by: Alexander Lezhoev <Alexander_Lezhoev@xyratex.com>