Add __future__ imports and __metaclass__ for automationhub

plugins/doc_fragments/ipamodule_base_docs.py

plugins/module_utils/ansible_freeipa_module.py

plugins/modules/ipaautomember.py

plugins/modules/ipaautomountlocation.py

plugins/modules/ipaconfig.py

plugins/modules/ipadelegation.py

plugins/modules/ipadnsconfig.py

plugins/modules/ipadnsforwardzone.py

plugins/modules/ipadnsrecord.py

plugins/modules/ipadnszone.py

plugins/modules/ipagroup.py

plugins/modules/ipahbacrule.py

plugins/modules/ipahbacsvc.py

plugins/modules/ipahbacsvcgroup.py

plugins/modules/ipahost.py

plugins/modules/ipahostgroup.py

plugins/modules/ipalocation.py

plugins/modules/ipapermission.py

plugins/modules/ipaprivilege.py

plugins/modules/ipapwpolicy.py