Update Metadata Cache

Change-Id: Iaa2acb1592e2b72a6d742cbe3995083c0e5407f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/4167963
Bot-Commit: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
12 files changed