artifacts are half a gigabyte

This is a growing problem and now, its spun out of control.

The latest release artifacts are half a gigabyte. sorry, I am against adding more retries to the smoke tester and continuing down the same path (LUCENE-6231).

Instead I open this blocker issue to discuss fixing this. Whenever i tried to fix it before (e.g. removing zips), people complained at me "what are you trying to fix" and wouldn't let me minimize it in the slightest.

Now the problem is clear, we have a blocker issue to discuss it.