connect(2) says stream sockets may only succeed to connect once. This means
if the call to sock.connect() fails it will continue failing for the
entirety of the wait loop, and we will fail to wait for a port to bind even
when it eventually becomes available.

Make sure we create a new socket every time we are about to try to connect
to it.

Change-Id: I16d7dbea3590c5bf7f7240bdefcc5ec0bcd1edb5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1528291
Commit-Queue: Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com>
Auto-Submit: Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>