Merge "Revert "Revert "[pm] remove old stage dirs on low storage""" into sc-v2-dev am: d2714d90

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15960215

Change-Id: I9f2e0a91de4e40699e691546f1a094407033e3e8