Fix logging in device for testers (DEV) #1651

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/util/CWADebug.kt

@@ -11,10 +11,10 @@ object CWADebug {
     fun init(application: Application) {
         if (isDebugBuildOrMode) System.setProperty("kotlinx.coroutines.debug", "on")
 
-        if (BuildConfig.DEBUG) {
+        if (isDeviceForTestersBuild) {
             Timber.plant(Timber.DebugTree())
         }
-        if ((buildFlavor == BuildFlavor.DEVICE_FOR_TESTERS || BuildConfig.DEBUG)) {
+        if (isDeviceForTestersBuild) {
             fileLogger = FileLogger(application)
         }
     }