Refactoring in order

[mrlesmithjr]

This role is due for some code refactoring love, etc.

[Tcharl]

Hi @mrlesmithjr ,

FYI, I find out how to mount virtual disk in a travis job: so that you can add molecule->vagrant-libvirt tests on LVM in a travis pipeline :-).
I achieved that here, and may contribute to some third party repositories (for example this one), but it would come in mid term if it comes from me