Add support for six new key-value pairs added by OnionPerf
OnionPerf adds six new key-value pairs to the .tpf format that Torperf/CollecTor did not produce: ENDPOINTLOCAL
, ENDPOINTPROXY
, ENDPOINTREMOTE
, HOSTNAMELOCAL
, HOSTNAMEREMOTE
, and SOURCEADDRESS
. We should add support for these keys to metrics-lib, so that we can start using their values.