Set default user value inside the constructor body.
Set default user value inside the constructor body.

We can't do it inside the method signature because the config might have not
been parsed yet by then.

tonybaloney/st2,lakshmi-kannan/st2,emedvedev/st2,StackStorm/st2,tonybaloney/st2,emedvedev/st2,pixelrebel/st2,peak6/st2,nzlosh/st2,peak6/st2,lakshmi-kannan/st2,lakshmi-kannan/st2,Plexxi/st2,punalpatel/st2,pixelrebel/st2,nzlosh/st2,Plexxi/st2,punalpatel/st2,nzlosh/st2,pixelrebel/st2,nzlosh/st2,StackStorm/st2,peak6/st2,punalpatel/st2,StackStorm/st2,Plexxi/st2,Plexxi/st2,StackStorm/st2,emedvedev/st2,tonybaloney/st2