internal/coordinator/pool: show C2 and N2 CPUS in the UI
internal/coordinator/pool: show C2 and N2 CPUS in the UI

Show our quotas on the farmer homepage making it easier to see when
we're at capacity.

Change-Id: I8c6820298914b320c4165e0ec7d9d9d9f1d7a5c4
Reviewed-on: https://go-review.googlesource.com/c/build/+/361657
Trust: Alexander Rakoczy <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@golang.org>
Run-TryBot: Alexander Rakoczy <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@golang.org>
Reviewed-by: Heschi Kreinick <e89ab2b172855aa0ad01c40c4d8a3535a61ac68a@google.com>
Reviewed-by: Carlos Amedee <ab5e2bca84933118bbc9d48ffaccce3bac4eeb64@golang.org>
TryBot-Result: Go Bot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

golang/build,golang/build,golang/build,golang/build