opnfv doctor: - opnfv document not updated or mis-match with code expectation

[Manik Bindlish]

Refereed Document:
http://docs.opnfv.org/en/latest/submodules/doctor/docs/release/configguide/feature.configuration.html

In Document:
sudo python monitor.py "$COMPUTE_HOST" "$COMPUTE_IP" "http://127.0.0.1:$INSPECTOR_PORT/events"

"http://127.0.0.1:$INSPECTOR_PORT/events" passed as 3rd argument but code is expecting either 'sample'
or 'congress'

File: monitor.py
Line29: SUPPORTED_INSPECTOR_TYPES = ['sample', 'congress']
Line41: if args.inspector_type not in SUPPORTED_INSPECTOR_TYPES:
Line42: raise Exception("Inspector type '%s' not supported", args.inspector_type)