Refactor JIRABuildNotifier to a more common RunListener implementations

Currently the JIRA plugin will register a JIRABuildNotifier in Jenkins for every Job. But this notifier doesn't play nicely with jobs that themselves have sub-jobs like Pipeline and Folder jobs.

If we refactor the job specific JIRABuildNotifier to an Instance generic RunListener then it becomes easier to maintain the notification feature implemented by the JIRABuildNotifier.
This RunListener should simply PUT the Job URL and Build number to an endpoint in JIRA, so that JIRA can then handle the synchronization like how it does it now.
All linked JIRA instances should be managed Instance wide and not per Job.

This will also effect the JIRAChangeLogAnnotator since this uses the JIRABuildNotifier to lookup the JIRA Issue Keys. It should be refactored to use the same linked JIRA instances list and use the IssueKeyExtractor to locate issue keys instead of looking them up using JIRA.