Add boilerplate and remove wildcard imports for openstack modules (#31461)

* Add boilerplate and remove wildcard imports for openstack modules
* Remove openstack files that are now pep8 compliant from the legacy list

lib/ansible/modules/cloud/openstack/os_user_role.py

@@ -1,18 +1,10 @@
 #!/usr/bin/python
 # Copyright (c) 2016 IBM
-#
-# This module is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This software is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this software.  If not, see <http://www.gnu.org/licenses/>.
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
 
 ANSIBLE_METADATA = {'metadata_version': '1.1',
                     'status': ['preview'],
@@ -94,13 +86,16 @@ RETURN = '''
 #
 '''
 
+from distutils.version import StrictVersion
+
 try:
     import shade
     HAS_SHADE = True
 except ImportError:
     HAS_SHADE = False
 
-from distutils.version import StrictVersion
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.openstack import openstack_full_argument_spec, openstack_module_kwargs
 
 
 def _system_state_change(state, assignment):
@@ -205,7 +200,7 @@ def main():
             if assignment:
                 kwargs = _build_kwargs(user, group, project, domain)
                 cloud.revoke_role(role, **kwargs)
-                changed=True
+                changed = True
 
         module.exit_json(changed=changed)
 
@@ -213,8 +208,5 @@ def main():
         module.fail_json(msg=str(e))
 
 
-from ansible.module_utils.basic import *
-from ansible.module_utils.openstack import *
-
 if __name__ == '__main__':
     main()