enable support for includedRegions like githubPullRequest plugin

[vyshakprojects]

We have a single repo that has different folders each has a docker file for creating containers.
java/
Dockerfile
Python/
Dockerfile

I have different pipeline jobs for different docker files. I want to trigger the pipeline for java if the java/Dockerfile is changed.

This feature is already available in the GitHub Pull Request plugin. Its done through includedRegions option.

Please add this feature as well.