* support bandwidth_limit set by server plugin
* limiter at proxy level
* bandwidth_limit_mode
* updates tests for bandwidth_limit_mode default
* bandwidth_limit_mode as string
* add checkForSrv for bandwidth_limit_mode
* bandwidth_limit flags for sub cmds
* gci write
* add close proxy op
* Move to actual closing routine
* Fix e2e tests for CloseProxy
* Add warning on resource exhaustion
* Add CloseProxy to manual close
* retuen errors to `CloseProxy` callers