For pipelines, as a user I want to be able to include/exclude files that trigger the build

As of now all files trigger the build. It would be great to be able to trigger the build only when a specific file changes, or exclude files from triggering the build. For example, when project.json changes do not trigger a build. This can be useful when keeping npmjs up to date with the latest version and the project.json file needs its version saved within source control (which would then trigger another build).