ipahbacsvc: Fix documentation sections and agument spec

ansible-test with ansible-2.14 is adding a lot of new tests to ensure
that the documentation section and the agument spec is complete. Needed
changes:

DOCUMENTATION section

- `type: str` needs to be set for string parameters
- `type: list` needs to be set for list parameters
- `elements: str` needs to be given for list of string parameters
- `required` tags need to be fixed according to the `argument_spec`
- `author` needs to be given with the github user also: `Name (@user)`

argument_spec

- `elements="str"` needs to be added to all list of string parameters

The `copyright` date is extended with `-2022`.

plugins/modules/ipahbacsvc.py

@@ -3,7 +3,7 @@
 # Authors:
 #   Thomas Woerner <twoerner@redhat.com>
 #
-# Copyright (C) 2019 Red Hat
+# Copyright (C) 2019-2022 Red Hat
 # see file 'COPYING' for use and warranty information
 #
 # This program is free software; you can redistribute it and/or modify
@@ -39,17 +39,21 @@ extends_documentation_fragment:
 options:
   name:
     description: The group name
-    required: false
+    type: list
+    elements: str
+    required: true
     aliases: ["cn", "service"]
   description:
     description: The HBAC Service description
+    type: str
     required: false
   state:
     description: State to ensure
+    type: str
     default: present
     choices: ["present", "absent"]
 author:
-    - Thomas Woerner
+  - Thomas Woerner (@t-woerner)
 """
 
 EXAMPLES = """
@@ -102,7 +106,7 @@ def main():
     ansible_module = IPAAnsibleModule(
         argument_spec=dict(
             # general
-            name=dict(type="list", aliases=["cn", "service"], default=None,
+            name=dict(type="list", elements="str", aliases=["cn", "service"],
                       required=True),
             # present