execute_ipa_commands replces the check mode exit, the loop over the
generated commands and also in the member failure handling for modules
with member support.

ipaadmin_variables are handled by IPAAnsibleModule,
ansible_module.params_get is used to get the parameters and
ansible_module.ipa_connect is used to simplify the module.

The automember_add_condition and automember_remove_condition commands
are not verifying condition keys in all cases. This is for example not
done in the removal case if a condition is not part of the automember
rule.

For consistent behaviour this needs to be done in the automember module
now. The condition keys are verified with the user and group aciattrs
returned by the API command json_metadata now.

Related: RHBZ#1976926

result["failed"] is used only for INCLUDE_RE, EXCLUDE_RE if entries could
not be added that are already there and it entries could not be removed
that are not there.

All other issues like invalid attributes etc. are handled as exceptions.
Therefore the error section is not here as in other modules.

Fixes RHBZ#1979626

The parameters in the inclusive and exclusive dicts are not defined and
also not checked. Therefore it is possible to have parameters in the
dicts that are not used.

The dicts for the inclusive and exclusive parameters are now defined and
also added to the description.

The action is service and member for the module, but it needs to be the
module name and member.

    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