RoleParser does not define none, handshake, and unknown replica states

[mp911de]

See https://github.com/redis/redis/blob/f4549d1cf4830c0584f8e41369a8628842a67aec/src/replication.c#L3241:

        if (slaveIsInHandshakeState()) {
            slavestate = "handshake";
        } else {
            switch(server.repl_state) {
            case REPL_STATE_NONE: slavestate = "none"; break;
            case REPL_STATE_CONNECT: slavestate = "connect"; break;
            case REPL_STATE_CONNECTING: slavestate = "connecting"; break;
            case REPL_STATE_TRANSFER: slavestate = "sync"; break;
            case REPL_STATE_CONNECTED: slavestate = "connected"; break;
            default: slavestate = "unknown"; break;
            }
        }