patch_rhel.yml

---
- hosts: rhel6
  tasks:
    - include_role:
        name: yum_clean_all
    - include_role:
        name: yum_makecache
    - include_role:
        name: yum_check_update
    - include_role:
        name: yum_download_only

    - block:
        - include_role:
            name: yum_update
        - include_role:
            name: yum_clean_all

      when:
        - yum_download_only is defined
        - yum_download_only.stdout.find('No packages marked for updates') == -1