Add functionality to allow EAP QE PRE GA testing

[istraka]

• test scenarios produce JUnit test results
• driver is configurable using molecule -e parameter (EAP QE has podman)
• ability to download assets / pre ga testing bits
• ability to define variables (eap_offline_install: True) in one place

[guidograzioli]

include_vars: ../vars.yml

the relative path there is a very common way for problems; if you really need to import common variables (but imho for test cases in particular are so error-prone without giving much benefits) : create a vars directory under each molecule test, and a symlink there to the common file.

so

/molecule/
    vars.yml
    /default/
         vars/main.yml -> vars.yml

Another practice to avoid is importing multiple var files as there is no facility in ansible to check for double definitions

[istraka]

After internal communication we went with having vars.yml as group_vars for all groups.