Fix #647 - Remove urllib3 conflicts (#652)
Fix #647 - Remove urllib3 conflicts (#652)

This should help remove potential conflicts between `urllib3` and `requests`. `requests` anyways transitively depends on `urllib3`, so removing this shouldn't be a problem.
vixns/marathon-lb,vixns/marathon-lb,mesosphere/marathon-lb,mesosphere/marathon-lb,vixns/marathon-lb,mesosphere/marathon-lb