[DEV][tests] Allow to specify which suite to run via command line.
[DEV][tests] Allow to specify which suite to run via command line.

Change-Id: I3208848d0ea0d70b6467a2dc288425a73f2e520f

Parrot-Developers/libpomp,Parrot-Developers/libpomp,Parrot-Developers/libpomp,Parrot-Developers/libpomp