Add own prepare.yml to drivers prepare.yml

[mathias-ioki]

Hi!

I'm using molecule in combination with the OpenStack driver. This driver is shipped with its own prepare.yml. As this prepare.yml is really useful, I still want to use it, but also want to add some own tasks.

In my special case, I want to

• spawn the OpenStack machines
• run the OpenStack driver specific prepare.yml
• run my own prepare tasks, that should only run during instance creation, but not during converge, as they need a long time to complete

As soon as I add my own prepare.yml the driver specific one is ignored. I could of course just copy the tasks from the driver to my own prepare.yml, but this way I wouldn't receive updates of the drivers prepare.yml if this one gets updated in a new version.

Any ideas, how I can still include the drivers prepare.yml? As we are working in a Team with different operating systems and ansible deployments, the molecule-plugin directory can always be in a different place.