[lucicfg] Force kwargs for optional parameters in validators. This makes it safer to change them later and makes calls more readable. R=iannucci@chromium.org, tandrii@chromium.org Change-Id: I2d07471ca9076d8708b5320200086b656777db72 Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2136236 Commit-Queue: Vadim Shtayura <vadimsh@chromium.org> Reviewed-by: Andrii Shyshkalov <tandrii@google.com> Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
LUCI Go code is meant to be worked on from an Chromium infra.git checkout, which enforces packages versions and Go toolchain version. First get fetch via depot_tools.git then run:
fetch infra cd infra/go eval `./env.py` cd src/go.chromium.org/luci
Contributing uses the same flow as Chromium contributions.