VPR jenkins job generates content but doesn't create a PR

[karenzone]

The Versioned Plugin Reference jenkins job runs every 6 hours. If it picks up new content, it creates a new branch called versioned_docs_new_content. Then it uses that branch to create a PR in the logstash-docs repo. Starting 2022-01-13, the versioned plugin doc generation continued and successfully created the versioned_docs_new_content branch, but new PRs with updated content stopped.

Tip for posterity: The jenkins job won't create a branch or PR if a branch called versioned_docs_new_content already exists. That's why we always delete the branch after we merge the VPR PR.

[karenzone]

@jsvd fixed with commit: 701386b. ❤️