Cyclon exchange_view() should not return back to the source a partialView containing the source's ip

[robzenn92]

In cyclon/app.py the following piece of code is wrong.

source = message.get('source')
size = received_partial_view.size
to_avoid = None
if cyclon.partialView.contains_ip(source):
    to_avoid = cyclon.partialView.get_peer_by_ip(source)
to_send = cyclon.partialView.select_neighbors(to_avoid, size)

In fact, source is in the form http://<source_ip>:<port> while both cyclon.partialView.contains_ip and cyclon.partialView.get_peer_by_ip expect an IP. Hence, to_avoid value was alway None.

[robzenn92]

The code is not needed anymore cause cyclon returns a random subset of descriptors no matter if the source ip is included or not.