Add a config option to run podman as root

[miterion]

Issue Type

• Feature request

Molecule and Ansible details

ansible 2.9.9
molecule 3.0.4

Molecule installation method (one of):

• pip

Ansible installation method (one of):

• OS package

Desired Behavior

Podman allows running containers in a rootless mode, although this introduces some limitations.
For example this makes it difficult to test ansible roles which rely on a working systemd instance running in the container.

It would therefore be nice if it would be possible to specify whether podman should be executed as root or as the current user in the molecule config.