Add test case which verifies auth handler works fine and doesn't throw even if syncer sync() method throws.
Add test case which verifies auth handler works fine and doesn't throw
even if syncer sync() method throws.

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