os_mirrors:

  - os           : ubuntu
    releases     : [ 'vivid', 'wily' ]
    distributions: [ 'main', 'updates', 'security' ]
    components   : [ 'main', 'universe' ]

  - os           : ubuntu2
    releases     : [ 'trusty', 'xenial' ]
    distributions: [ 'main', 'updates', 'security' ]
    components   : [ 'main', 'universe' ]


Given the above variable os_mirrors, how do I iterate across releases,distributions and components in a single task ? I need

releases-distributions-components (ex: vivid-main-main, vivid-main-universe, vivid-updates-main, vivid-updates-universe and so on for os=ubuntu and os=ubuntu2 )

I tried with_subelements but it won't work i suppose