Fix setValue saving in restart

When running maintenancetool and installing a component that sets a value
in installscript with setValue, the value is cleared when pressing
'Restart'.

Task-number:QTIFW-504

Change-Id: Ie588b6f1011d7b50b771ea8ee0dea99350f65878
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
Reviewed-by: Niels Weber <niels.weber@theqtcompany.com>
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>

src/sdk/installerbase.cpp

@@ -267,11 +267,15 @@ int InstallerBase::run()
     controller.setManagerParams(params);
     controller.setControlScript(controlScript);
 
-    if (m_core->isInstaller())
+    if (m_core->isInstaller()) {
         controller.setGui(new InstallerGui(m_core));
-    else
+    }
+    else {
         controller.setGui(new MaintenanceGui(m_core));
-
+        //Start listening to setValue changes that newly installed components might have
+        connect(m_core, &QInstaller::PackageManagerCore::valueChanged, &controller,
+            &TabController::updateManagerParams);
+    }
     QInstaller::PackageManagerCore::Status status =
         QInstaller::PackageManagerCore::Status(controller.init());
     if (status != QInstaller::PackageManagerCore::Success)

src/sdk/tabcontroller.cpp

@@ -204,3 +204,8 @@ void TabController::onNetworkSettingsChanged(const QInstaller::Settings &setting
     d->m_settings = settings;
     d->m_networkSettingsChanged = true;
 }
+
+void TabController::updateManagerParams(const QString &key, const QString &value)
+{
+    d->m_params.insert(key, value);
+}

src/sdk/tabcontroller.h

@@ -62,6 +62,7 @@ public:
 
 public Q_SLOTS:
     int init();
+    void updateManagerParams(const QString &key, const QString &value);
 
 private Q_SLOTS:
     void restartWizard();