bot_scaling: Add message type for ResourceUsage

Introduce a new message type, ResourceUsage, to track the total number
of vms, cpus, and the memory amount allocated across all bot groups.
This will be used to track our rate against quota limits and provide an
immediate view of growth against quota.

Bug: chromium:1027593
Change-Id: Iaa062a6f08ac1e0adcf3aef52fd3b5432b584b24
Commit-Queue: Mike Nichols <>
Tested-by: Mike Nichols <>
Reviewed-by: Sean Abraham <>
Reviewed-by: David Burger <>
2 files changed