Merge "Create /metadata/staged-install dir to store staged install failure...

Merge "Create /metadata/staged-install dir to store staged install failure reasons" into rvc-dev am: 000226f1 am: 07bc6980 am: 15fada88

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/11408963

Change-Id: Idc56001238513cea67bd13f8a0985c05966e9d84