Vehicle: fix unit tests after camera change

Since we no longer request cameras to have specific camera component IDs
but allow the autopilot to "be" a camera as well, we need to adjust the
unit tests to account for that.

src/Vehicle/RequestMessageTest.cc

@@ -41,6 +41,9 @@ void RequestMessageTest::_testCaseWorker(TestCase_t& testCase)
     // Gimbal controller sends message requests when receiving heartbeats, trying to find a gimbal, and it messes with this test so we disable it
     vehicle->deleteGimbalController();
 
+    // Camera manager also messes with it.
+    vehicle->deleteCameraManager();
+
     _mockLink->clearReceivedMavCommandCounts();
     _mockLink->setRequestMessageFailureMode(testCase.failureMode);
 

src/Vehicle/SendMavCommandWithSignallingTest.cc

@@ -42,7 +42,9 @@ void SendMavCommandWithSignallingTest::_testCaseWorker(TestCase_t& testCase)
     // Gimbal controler requests MAVLINK_MSG_ID_GIMBAL_MANAGER_INFORMATION on vehicle connection,
     // and that messes with this test, as it receives response to that command instead. So if we 
     // are taking the response to that MAV_CMD_REQUEST_MESSAGE, we discard it and take the next
-    while (arguments.at(2).toInt() == MAV_CMD_REQUEST_MESSAGE) {
+    // Also, the camera manager requests MAVLINK_MSG_ID_CAMERA_INFORMATION on vehicle connection,
+    // so we need to ignore that as well.
+    while (arguments.at(2).toInt() == MAV_CMD_REQUEST_MESSAGE || arguments.at(2).toInt() == MAV_CMD_REQUEST_CAMERA_INFORMATION) {
         qDebug() << "Received response to MAV_CMD_REQUEST_MESSAGE(512), ignoring, waiting for: " << testCase.command;
         QCOMPARE(spyResult.wait(10000), true);
         arguments = spyResult.takeFirst();

src/Vehicle/Vehicle.cc

@@ -535,6 +535,14 @@ void Vehicle::prepareDelete()
     }
 }
 
+void Vehicle::deleteCameraManager()
+{
+    if(_cameraManager) {
+        delete _cameraManager;
+        _cameraManager = nullptr;
+    }
+}
+
 void Vehicle::deleteGimbalController()
 {
     if (_gimbalController) {

src/Vehicle/Vehicle.h

@@ -901,6 +901,9 @@ class Vehicle : public FactGroup
     /// Delete gimbal controller, handy for RequestMessageTest.cc, otherwise gimbal controller message requests will mess with this test
     void deleteGimbalController();
 
+    /// Delete camera manager, just for testing
+    void deleteCameraManager();
+
     quint64     mavlinkSentCount        () const{ return _mavlinkSentCount; }        /// Calculated total number of messages sent to us
     quint64     mavlinkReceivedCount    () const{ return _mavlinkReceivedCount; }    /// Total number of sucessful messages received
     quint64     mavlinkLossCount        () const{ return _mavlinkLossCount; }        /// Total number of lost messages