Enable androidtestrunner to fetch crash logs that are not reported by Test lib

There are test crash cases where the test lib doesn't pick the logs for Android, for example if the crash happens at the very start of the app before Qt libs are loaded, or if the jvm crashes (for example if a null jclass object is passed to a jni call). However, those logs are available through adb logcat, so androidtestrunner needs to pick those logs as well and report it back.