New automember management module

    There is a new automember management module placed in the plugins folder:

        plugins/modules/ipaautomember.py

    The automember module allows to ensure presence or absence of automember rules
    and manage automember rule conditions.

    Here is the documentation for the module:

        README-automember.md

    New example playbooks have been added:

        playbooks/automember/automember-group-absent.yml
        playbooks/automember/automember-group-present.yml
        playbooks/automember/automember-hostgroup-absent.yml
        playbooks/automember/automember-hostgroup-present.yml
        playbooks/automember/automember-hostgroup-rule-absent.yml
        playbooks/automember/automember-hostgroup-rule-present.yml

    New tests for the module:

        tests/automember/test_automember.yml