Add two test bots for coverage counting path renderer

Bug: skia:
Change-Id: Ib8e89e5e9a75d24b69c23873168fcc23f9eb5c45
Reviewed-on: https://skia-review.googlesource.com/24063
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
5 files changed