message: tls: add support for client-side session resumption (relnotes).
diff: @@ -60,6 +60,7 @@ Version history
  its behaviour within TCP and HTTP implementations.
  * stream: renamed `perRequestState` to `filterState` in `StreamInfo`.
  * thrift_proxy: introduced thrift rate limiter filter
  +* tls: add support for :ref:`client-side session resumption <envoy_api_field_auth.UpstreamTlsContext.max_session_keys>`.
  * tls: add support for CRLs in :ref:`trusted_ca <envoy_api_field_auth.CertificateValidationContext.trusted_ca>`.
  * tracing: added support to the Zipkin tracer for the :ref:`b3 <config_http_conn_man_headers_b3>` single header format.
  * tracing: added support for :ref:`Datadog <arch_overview_tracing>` tracer.
  