RtpsRelay discovery logging and statistics don't handle updates #2887
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Problem
It is expected that RtpsRelay clients will determine and update their
server-reflexive address. These updates will appear as new samples in
the BITs read by the RtpsRelay. The RtpsRelay will log these updates
as new participants, publications, and subscriptions which is
misleading.
Solution
Distinguish between new participants, publications, and subscriptions
and updates to existing ones.