bot_scaling: Remove ResourceUsage and add max values

Remove the ResourceUsage message type as it is no longer used.
Additionally, add fields to capture the max values possible for a region
for CPUs.

Bug: chromium:1090544
Change-Id: I0678fc8e855d1b3c3c95ecb87a7b4fc7f2d2caa9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2229108
Commit-Queue: Mike Nichols <mikenichols@chromium.org>
Tested-by: Mike Nichols <mikenichols@chromium.org>
Reviewed-by: David Burger <dburger@chromium.org>
Reviewed-by: Dhanya Ganesh <dhanyaganesh@chromium.org>
2 files changed