message: tcp: switching to the new pool
  Flipping envoy.reloadable_features.new_tcp_connection_pool to true by default
  Risk Level: High (but has been successfully smoke tested in prod this time)
  Testing: extensive
  Docs Changes: n/a
  Release Notes: were there from last time
diff: @@ -76,6 +76,7 @@ constexpr const char* runtime_features[] = {
  "envoy.reloadable_features.http_transport_failure_reason_in_body",
  "envoy.reloadable_features.http2_skip_encoding_empty_trailers",
  "envoy.reloadable_features.listener_in_place_filterchain_update",
  + "envoy.reloadable_features.new_tcp_connection_pool",
  "envoy.reloadable_features.overload_manager_disable_keepalive_drain_http2",
  "envoy.reloadable_features.preserve_query_string_in_path_redirects",
  "envoy.reloadable_features.preserve_upstream_date",
  @@ -95,8 +96,6 @@ constexpr const char* runtime_features[] = {
  constexpr const char* disabled_runtime_features[] = {
  // TODO(asraa) flip this feature after codec errors are handled
  "envoy.reloadable_features.new_codec_behavior",
  - // TODO(alyssawilk) flip true after the release.
  - "envoy.reloadable_features.new_tcp_connection_pool",
  // Sentinel and test flag.
  "envoy.reloadable_features.test_feature_false",
  };
  