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The previous commit updates the Companion to better handle the case
where the Rendezvous server is far away from the user (long round trip
time).

This commit does a mitigation, at the cost of 5 seconds, in replmgr.js
that results in older Companions being more likely to connect with a
long round trip time.

Change-Id: Ice6b86b11a3c21beedf2c066ac46593659651713