tracing: Capture events in tracing data (#5915)

Signed-off-by: Ryan Burn <ryan.burn@gmail.com>

Mirrored from https://github.com/envoyproxy/envoy @ 8b1a8452867a1dcd0e2414753d506aa4545fd3c1

envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.proto

@@ -116,6 +116,10 @@ message HttpConnectionManager {
     // :ref:`HTTP Connection Manager <config_http_conn_man_runtime>`.
     // Default: 100%
     envoy.type.Percent overall_sampling = 5;
+
+    // Whether to annotate spans with additional data. If true, spans will include logs for stream
+    // events.
+    bool verbose = 6;
   }
 
   // Presence of the object defines whether the connection manager