Fix pylint on runners Python modules - previously we didn't lint runners because pylint simply silently ignores invalid / inexistent paths.
Fix pylint on runners Python modules - previously we didn't lint runners
because pylint simply silently ignores invalid / inexistent paths.

Plexxi/st2,nzlosh/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2,Plexxi/st2,tonybaloney/st2,nzlosh/st2,nzlosh/st2,tonybaloney/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2,tonybaloney/st2,Plexxi/st2