QmlProfiler: Unify local and tcp connection mechanism

Use the URL scheme to distinguish between them, check that in
QmlProfilerClientManager and test all possible combinations of URL
parts.

Change-Id: I6583e5bf18eda0344a299a279c12578c4ebc7ffe
Reviewed-by: hjk <hjk@qt.io>

src/plugins/android/androidrunner.cpp

@@ -293,6 +293,7 @@ AndroidRunnerWorker::AndroidRunnerWorker(RunControl *runControl, const AndroidRu
         QTC_ASSERT(server.listen(QHostAddress::LocalHost)
                    || server.listen(QHostAddress::LocalHostIPv6),
                    qDebug() << tr("No free ports available on host for QML debugging."));
+        m_qmlServer.setScheme(urlTcpScheme());
         m_qmlServer.setHost(server.serverAddress().toString());
         m_qmlServer.setPort(server.serverPort());
     }