Consolidate Linux GCE dimensions

It appears we were not setting the CPU for our Build
Tasks, which confused our capacity metrics.


BUG=skia:

Change-Id: I60cbe3b99b9de6865141f124df5618975bf65a05
Reviewed-on: https://skia-review.googlesource.com/10020
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
2 files changed