#9 fgms not accepting multiple relays in same IP

[Quofei]

For example, in config file the following is set:

relay.host = 10.130.100.171
relay.port = 5000
relay.host = 10.130.100.171
relay.port = 5003

fgms only recognize the first entry (i.e. only relay to port 5000), and the relay in port 5003 is ignored.

This affects both 0.X and 1.X branch

[Quofei]

fix in 1.0.0 branch and 0.13.3 branch