remove:
* upgrade_start
* socket_open_start
* maconn_open_start
* maconn_close_start

add:
* socket_open_error

added metricPrefix to `socket-to-conn.ts` and set in `listener.ts`

remove:
* maconn_abort - would have resulted in duplicate of `maconn_close_abort`
* maconn_open_success - No logic actually happens during maconn creation.. should be build/compile/run error and not a metric.

add: N/A

change:
* socket_close_success -> maconn_socket_close_success