Update MockLink params to latest PX4 firmware

src/AnalyzeView/LogDownloadTest.cc

@@ -57,7 +57,7 @@ void LogDownloadTest::downloadTest(void)
     }
     _multiSpyLogDownloadController->clearAllSignals();
 
-    QString downloadFile = QDir(downloadTo).filePath("log_0_UnknownDate.px4log");
+    QString downloadFile = QDir(downloadTo).filePath("log_0_UnknownDate.ulg");
     QVERIFY(UnitTest::fileCompare(downloadFile, _mockLink->logDownloadFile()));
 
     QFile::remove(downloadFile);