[freeipa PR#4506][opened] ipatests: Mark firewalld commands as no-op on non-firewalld distros

[stanislavlevin]

   URL: https://github.com/freeipa/freeipa/pull/4506
Author: stanislavlevin
 Title: #4506: ipatests: Mark firewalld commands as no-op on non-firewalld distros
Action: opened

PR body:
"""
The FreeIPA integration tests strictly require Firewalld.
But not all the distros have such or any other high-level tool
for managing a firewall. Thus, to run integration tests on such systems
NoOpFirewall class has been added, which provides no-op firewalld
commands.

Fixes: https://pagure.io/freeipa/issue/8261
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/4506/head:pr4506
git checkout pr4506