Add __future__ imports and __metaclass__ for automationhub

This patch is needed to pass Automation Hub tests.

plugins/module_utils/ansible_freeipa_module.py

@@ -22,6 +22,10 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
+from __future__ import (absolute_import, division, print_function)
+
+__metaclass__ = type
+
 __all__ = ["gssapi", "netaddr", "api", "ipalib_errors", "Env",
            "DEFAULT_CONFIG", "LDAP_GENERALIZED_TIME_FORMAT",
            "kinit_password", "kinit_keytab", "run", "DN", "VERSION",