Rename all of the modules

This is separate from the previous patch - it's just the results
of running the script so we can review the two a little independently.
We should probably squash them.

Change-Id: I838f15cf4a32455a5be20033c8ddc27db6ca15c0

plugins/modules/group_assignment.py

@@ -0,0 +1,106 @@
+#!/usr/bin/python
+# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+
+ANSIBLE_METADATA = {'metadata_version': '1.1',
+                    'status': ['preview'],
+                    'supported_by': 'community'}
+
+
+DOCUMENTATION = '''
+---
+module: group_assignment
+short_description: Associate OpenStack Identity users and groups
+author: "Monty Taylor (@emonty)"
+description:
+    - Add and remove users from groups
+options:
+   user:
+     description:
+        - Name or id for the user
+     required: true
+     type: str
+   group:
+     description:
+        - Name or id for the group.
+     required: true
+     type: str
+   state:
+     description:
+       - Should the user be present or absent in the group
+     choices: [present, absent]
+     default: present
+     type: str
+requirements:
+    - "python >= 3.6"
+    - "openstacksdk"
+
+extends_documentation_fragment:
+- openstack.cloud.openstack
+'''
+
+EXAMPLES = '''
+# Add the demo user to the demo group
+- openstack.cloud.group_assignment:
+  cloud: mycloud
+  user: demo
+  group: demo
+'''
+
+from ansible.module_utils.basic import AnsibleModule
+from ansible_collections.openstack.cloud.plugins.module_utils.openstack import (openstack_full_argument_spec,
+                                                                                openstack_module_kwargs,
+                                                                                openstack_cloud_from_module)
+
+
+def _system_state_change(state, in_group):
+    if state == 'present' and not in_group:
+        return True
+    if state == 'absent' and in_group:
+        return True
+    return False
+
+
+def main():
+    argument_spec = openstack_full_argument_spec(
+        user=dict(required=True),
+        group=dict(required=True),
+        state=dict(default='present', choices=['absent', 'present']),
+    )
+
+    module_kwargs = openstack_module_kwargs()
+    module = AnsibleModule(argument_spec,
+                           supports_check_mode=True,
+                           **module_kwargs)
+
+    user = module.params['user']
+    group = module.params['group']
+    state = module.params['state']
+
+    sdk, cloud = openstack_cloud_from_module(module)
+    try:
+        in_group = cloud.is_user_in_group(user, group)
+
+        if module.check_mode:
+            module.exit_json(changed=_system_state_change(state, in_group))
+
+        changed = False
+        if state == 'present':
+            if not in_group:
+                cloud.add_user_to_group(user, group)
+                changed = True
+
+        elif state == 'absent':
+            if in_group:
+                cloud.remove_user_from_group(user, group)
+                changed = True
+
+        module.exit_json(changed=changed)
+
+    except sdk.exceptions.OpenStackCloudException as e:
+        module.fail_json(msg=str(e), extra_data=e.extra_data)
+
+
+if __name__ == '__main__':
+    main()