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: 6e51de98

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

Change-Id: I059ba0217c540f25e483d6b25a2f2bdee8858dec