Renovate now comes with a variety of package managers supported, each with their own filename pattern(s). These patterns are now exposed for user configuration through the new `fileMatch` list/array configuration option, which has been added to each manager (npm, bazel, docker-compose, etc). `fileMatch` is defined as a mergeable list, meaning that users can add to the default pattern to extend the files being detected.
Closes#799
This PR adds initial support for buildkite plugin renovation.
It supports `plugin-name` or `my/plugin-name` plugins, and fully specified semver versions only (e.g. `v1.3.2`). Currently it will always propose an upgrade to the latest version available, e.g. if current version is v1.3.1 and both v1.3.2 and v2.0.0 exist then v2.0.0 will be proposed. Looks for any yml file in the `.buildkite/` directory.
Closes#1869
