* Async proxy pool
* Async proxy pool
* Late upstream initialization and exception guards
* Close upstream proxy connection on client connection close
* Refactor into EventManager
* Fix tests accounting in the event manager
* Ensure each process initializes logger
* pragma no cover
* Teardown connection when proxy pool upstream proxy closes
* Add ability to customize access log format and add additional context to it
* Maintain total size for response bytes in access logs
* Fix tests broken due to new plugin methods missing mock
* Update pubsub_eventing to use EventManager to avoid entire bootstrapping step
Abhinav Singh