iOSSimulator: Try to avoid flakiness of starting in simulator

Put in some delays between executing the various simulator commands,
so whatever might need to startup internally has time to do so.

Task-number: QTCREATORBUG-17336
Change-Id: I1d4fbbc14c8583fce1b72ee31d5fd4824f377efb
Reviewed-by: Vikas Pachdha <vikas.pachdha@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/ios/simulatorcontrol.cpp

@@ -362,6 +362,7 @@ void SimulatorControlPrivate::startSimulator(QFutureInterface<SimulatorControl::
     }
 
     if (!fi.isCanceled()) {
+        QThread::msleep(500); // give it some time. TODO: find an actual fix.
         fi.reportResult(response);
     }
 }
@@ -376,6 +377,7 @@ void SimulatorControlPrivate::installApp(QFutureInterface<SimulatorControl::Resp
     response.commandOutput = output;
 
     if (!fi.isCanceled()) {
+        QThread::msleep(500); // give it some time. TODO: find an actual fix.
         fi.reportResult(response);
     }
 }
@@ -455,6 +457,7 @@ void SimulatorControlPrivate::spawnAppProcess(QFutureInterface<SimulatorControl:
     }
 
     if (!fi.isCanceled()) {
+        QThread::msleep(500); // give it some time. TODO: find an actual fix.
         fi.reportResult(response);
     }
 }
@@ -474,6 +477,7 @@ void SimulatorControlPrivate::launchApp(QFutureInterface<SimulatorControl::Respo
             return;
 
         if (processSpawned) {
+            QThread::msleep(500); // give it some time. TODO: find an actual fix.
             const QStringList args({QStringLiteral("launch"), simUdid , bundleIdentifier});
             response.commandOutput = runSimCtlCommand(args);
             const QByteArray pIdStr = response.commandOutput.trimmed().split(' ').last().trimmed();