LU-1434 utils: Add build functionality for wireshark and Lustre/LNet plugins

Add build script `wsbuild' to create RPMs for wireshark and Lustre/LNet
plugins. Set-up of the download and compile environment for the desired
wireshark version will be handled via configuration file `wsconfig.sh'.
Intention is to use the script for Jenkins builds.

Signed-off-by: frank <Frank.Heckes@intel.com>
Change-Id: I3e00c5df102f2e52f0abf7c2d48488ccfb38a3ca
Reviewed-on: http://review.whamcloud.com/5520
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Reviewed-by: Chris Gearing <chris.gearing@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>