Merge "Revert "Revert "[pm] remove old stage dirs on low storage""" into sc-dev am: 3b1c05a7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15959732

Change-Id: Ibd9a9bb31823aa2d7b5d45a0c2a34e23343e0674