locust.io support

[Omar Moharrem]

When doing locust distributed testing i set my concurrency to 1000 and 2 workers. then i see blazemeter reporting 500 total concurrency. 

I saw this in the code of locust executor and i was wondering if this is a bug 

if self.is_master:
     concurrency = math.ceil(concurrency / float(self.expected_workers))

https://github.com/Blazemeter/taurus/blob/82e44638ac80c5bd37765d36f0018e1f9899b80a/bzt/modules/_locustio.py#L86

is there a reason to divide the concurrency over the expected workers? i would expect 1000 concurrency and not less.