Create odlparent 2.0.x maintenance jobs

Create odlparent 2.0.x maintenance jobs

With odlparent releasing out of simrel we need to create new maintenance
jobs for odlparent 2.0.x. This change does the following:

- Renames nitrogen jobs to master
- Add new odlparent 2.0.x jobs
- Remove {project-name}-integration-{stream} jobs
  (odlparent does not use them as they do not have any upstream)
- Configure distribution_branch for both master and 2.0.x to master

Change-Id: I80525b94c623a3749f155950280556310d2ca7d6
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>