Plugin Compatibility Tracking

This issue is used to track the ongoing effort to improve Plugin Compatibility.

GitHub is good at crosslinking pull requests and issues.
Get your pull requests tracked by posting a link to this issue in your PR.

[Plugin Compatibility Dashboard in Jenkins JIRA](https://issues.jenkins-ci.org/secure/Dashboard.jspa?selectPageId=17346)
[Query to view all open PRs here](https://github.com/search?q=state%3Aopen+is%3Apr+%22https%3A%2F%2Fgithub.com%2Fjenkinsci%2Fconfiguration-as-code-plugin%2Fissues%2F809%22)
[Query to view all merged PRs here](https://github.com/search?q=state%3Aclosed+is%3Apr+%22https%3A%2F%2Fgithub.com%2Fjenkinsci%2Fconfiguration-as-code-plugin%2Fissues%2F809%22)