Removed '-l' parameter in async_ssh exec_command (#237)
Removed '-l' parameter in async_ssh exec_command (#237)

Revised start_scheduler and start_worker to an environment free module
    execution
dask/distributed,blaze/distributed,amosonn/distributed,amosonn/distributed,blaze/distributed,broxtronix/distributed,mrocklin/distributed,amosonn/distributed,mrocklin/distributed,dask/distributed,broxtronix/distributed,dask/distributed,dask/distributed,mrocklin/distributed,broxtronix/distributed