refs #308 Instead of enumerating hosts, use the well known host url

Since we are hosting in the same process, we can get the URL from the host
object and pass it to new clients.

src/plugins/simulator/fs9/simulator_fs9.cpp

@@ -112,6 +112,7 @@ namespace BlackSimPlugin
             // Create a new client thread, set update frequency to 25 ms and start it
             QThread *clientThread = new QThread(this);
             CFs9Client *client = new CFs9Client(callsign.toQString(), CTime(25, CTimeUnit::ms()));
+            client->setHostAddress(m_fs9Host->getHostAddress());
             client->setPlayerUserId(m_fs9Host->getPlayerUserId());
             client->moveToThread(clientThread);