Retry config support was added to the CQ in https://chromereviews.googleplex.com/240527013/
This CL uses the retry config in Skia's cq.cfg file.
CQ's default failure_retry_weight is 1. We set it to 2 which will immediately go beyond the try job quota and will not retry for failures. It will retry for transient errors.
BUG=chromium:522460
TBR=mtklein
NOTRY=true
Review URL: https://codereview.chromium.org/1330473002
It's possible this rarely breaks, but I do write ARMv8 code frequently
enough that it'll help prevent broken trees.
BUG=skia:
Review URL: https://codereview.chromium.org/1209763003
