Enable stacktraces for the build server builds.
Enable stacktraces for the build server builds.

We have a few null pointer exceptions in lint too on our build
server, however without stacktrace they are impossible to diagnose.
This change enables these strack traces.

Test: ./gradlew clean with a purposefully added nullpointerexception
Change-Id: I18beafa6d92317833bddd937582e8a7fb03b6065

androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,aosp-mirror/platform_frameworks_support,aosp-mirror/platform_frameworks_support,androidx/androidx,AndroidX/androidx,aosp-mirror/platform_frameworks_support,AndroidX/androidx,androidx/androidx,AndroidX/androidx,aosp-mirror/platform_frameworks_support,AndroidX/androidx,aosp-mirror/platform_frameworks_support,AndroidX/androidx