Add a work around for test case which failed with new version of eventlet where poll() method has been removed from select module because it's blocking.
Add a work around for test case which failed with new version of
eventlet where poll() method has been removed from select module
because it's blocking.

Note: This issue only affects tests.

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