Merge "Revert "Revert "[pm] remove old stage dirs on low storage""" into rvc-qpr-dev am: 8f9f44e0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16056948

Change-Id: I47923d6e6126b02b6474d17d2b1d094ccd8a8c20