Update CQ/CI for dropping VS2015.

The default vs_version is now VS2017. I've switched the builders that
explicitly specify VS2017 to either VS2019, to provide coverage there,
or to omit it. (Clang and ARM64 needed something sufficiently new, but
otherwise didn't care. Since the baseline is now new enough, I figure
they can ride the default.)

Change-Id: I75ec879889e2042b225b8f2338ca94087f3744eb
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/52105
Reviewed-by: Adam Langley <agl@google.com>
7 files changed
tree: e3d7f4e7f4b2ceb261e16290f1cd4973533afc00
  1. generated/
  2. codereview.settings
  3. main.star
  4. OWNERS
  5. PRESUBMIT.py
  6. README.md
README.md

This branch contains configurations for BoringSSL's CI and CQ. To modify, edit main.star and then rerun ./main.star to regenerate the generated files.