sysroot: add InstallPackagesRequest.package_indexes

We also need to pass the metadata to install packages.

BUG=chromium:1088059
TEST=train

Change-Id: I552679c7d3362000b327d4af5b8ef49a665f61ed
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2340339
Reviewed-by: David Burger <dburger@chromium.org>
Reviewed-by: Mike Nichols <mikenichols@chromium.org>
Commit-Queue: LaMont Jones <lamontjones@chromium.org>
Tested-by: LaMont Jones <lamontjones@chromium.org>
2 files changed