Merge "Convert pagecache to python 3" into main am: e589fe4031

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/3096480

Change-Id: Ie8ce77be3ffc682c851c5d4beefacd63723ab7a9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>