LU-3968 lbuild: Extend script with build for Xeon Phi card

LU-3968 lbuild: Extend script with build for Xeon Phi card

Automatically download, compile and produce Lustre client RPMs
for Xeon Phi(TM) card if "--mpss-version" option is specified
for contrib/lbuild/lbuild script.

Also try to compile with Xeon Phi(TM) OFED if it's available.

Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Change-Id: Ida07d764dc824c13f22ffb53d24e2c6f79ce3573
Reviewed-on: http://review.whamcloud.com/7066
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Brian J. Murrell <brian.murrell@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>