When using group_tests, the pytest playbook was not receiving the
Ansible version to use, executing always with the latest available
version.
This patch fixes the behavior by passing the Ansible version to use
for tests to pytest_tests playbook.
Currently, upstream CI test documentation against different Ansible
versions, but playbook tests are only executed with Ansible 2.9 series.
This patch add support for running playbook tests against Ansible 2.9,
ansible-core 2.11, and against latest version of Ansible.
As running all the tests for every PR would take too long, the tests
for every PR use only Anisble 2.9, and are executed on Fedora-latest
and CentOS 7 and 8.
A new pipeline for nightly tests was added, which runs the tests in the
same distros, using Ansible 2.9, latest and Ansible-core 2.11.
Until now ansible-freeipa repository only had playbook tests. This
commit introduces the ability of creating TestCase classes connected to
the master host. This connection can be used to run commands in the
managed host after the ansible playbook execution is the allowing the
verification of the machine state.
