ansible_ipa_server.py: Calm down ansible-test "metaclass-boilerplate"

ansible-test sanity test "metaclass-boilerplate" fails now to recognize
the line "__metaclass__ = type" if there is a pylint disable comment
appended to the same line to not fail on using bad class naming.

The pylint disable comment has been moved to an extra preceding line.

roles/ipaserver/module_utils/ansible_ipa_server.py

@@ -23,7 +23,8 @@
 
 from __future__ import (absolute_import, division, print_function)
 
-__metaclass__ = type  # pylint: disable=invalid-name
+# pylint: disable=invalid-name
+__metaclass__ = type
 
 __all__ = ["IPAChangeConf", "certmonger", "sysrestore", "root_logger",
            "ipa_generate_password", "run", "ScriptError", "services",