LU-6119 test: Add testing for Lustre exported via Samba

LU-6119 test: Add testing for Lustre exported via Samba

Create a parallel-scale-cifs.sh test which exports
Lustre via Samba and runs concurrent load compilebench, dbench,
fsx, iozone on Samba clients.

The test assumes that Samba server and clients have necessary
packages installed.

Signed-off-by: Elena Gryaznova <elena.gryaznova@seagate.com>
Xyratex-bug-id: MRP-1374
Reviewed-by: Vladimir Saveliev <vladimir.saveliev@seagate.com>
Reviewed-by: Vitaly Fertman <vitaly.fertman@seagate.com>
Change-Id: Iace3b786bd34e42198a2ffdb35c436595fe2b8a5
Reviewed-on: http://review.whamcloud.com/13402
Reviewed-by: Jian Yu <jian.yu@intel.com>
Tested-by: Jian Yu <jian.yu@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Emoly Liu <emoly.liu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>