Fix ansible-test reported pep8 errors

These are indent issues, one item per line for argument_specs items
containing options dicts and missing or overflow spaces for comments
and dict delimiters.

plugins/modules/ipauser.py

@@ -824,14 +824,17 @@ def main():
             # general
             name=dict(type="list", aliases=["login"], default=None,
                       required=False),
-            users=dict(type="list", aliases=["login"], default=None,
+            users=dict(type="list",
+                       aliases=["login"],
+                       default=None,
                        options=dict(
                            # Here name is a simple string
                            name=dict(type="str", required=True),
                            # Add user specific parameters
                            **user_spec
                        ),
-                       elements='dict', required=False),
+                       elements='dict',
+                       required=False),
 
             # deleted
             preserve=dict(required=False, type='bool', default=None),