tcp listener: log source IP

[rgs1]

Useful while debugging TLS (and general) connection issues.

Signed-off-by: Raul Gutierrez Segales rgs@pinterest.com

[rgs1]

/retest

[repokitteh-read-only]

Retrying Azure Pipelines:
Check envoy-presubmit isn't fully completed, but will still attempt retrying.
Retried failed jobs in: envoy-presubmit

🐱

Caused by: a #16148 (comment) was created by @rgs1.

see: more, trace.

[lambdai]

LGTM
Since the goal is debugging, you may want to add the source ip to
ENVOY_LOG(debug, "closing connection: no matching filter chain found");
and
ENVOY_CONN_LOG(debug, "closing connection: no filters", *active_connection->connection_);

It's up to you.

[zuercher]

lgtm @yanavlasov do you want to do a final pass as well?

[github-actions]

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