New hbacrule (HBAC Rule) management module

There is a new hbacrule (HBAC Rule) management module placed in the plugins
folder:

  plugins/modules/ipahbacrule.py

The hbacrule module allows to ensure presence and absence of HBAC Rules.

Here is the documentation for the module:

  README-hbacrule.md

New example playbooks have been added:

  playbooks/hbacrule/ensure-hbarule-allhosts-absent.yml
  playbooks/hbacrule/ensure-hbarule-allhosts-disabled.yml
  playbooks/hbacrule/ensure-hbarule-allhosts-enabled.yml
  playbooks/hbacrule/ensure-hbarule-allhosts-present.yml
  playbooks/hbacrule/ensure-hbarule-allhosts-server-member-absent.yml
  playbooks/hbacrule/ensure-hbarule-allhosts-server-member-present.yml

New tests added for the module:

  tests/hbacrule/test_hbacrule.yml