rpm_key: PEP8 compliancy and documentation changes (#33426)

This PR includes:
- PEP8 compliancy changes
- Documentation changes

lib/ansible/modules/packaging/os/rpm_key.py

@@ -2,48 +2,42 @@
 # -*- coding: utf-8 -*-
 
 # Ansible module to import third party repo keys to your rpm db
-# (c) 2013, Héctor Acosta <hector.acosta@gazzang.com>
+# Copyright: (c) 2013, Héctor Acosta <hector.acosta@gazzang.com>
-#
+
 # 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'],
                     'supported_by': 'core'}
 
-
 DOCUMENTATION = '''
 ---
 module: rpm_key
-author: "Hector Acosta (@hacosta) <hector.acosta@gazzang.com>"
+author:
+- Hector Acosta (@hacosta) <hector.acosta@gazzang.com>
 short_description: Adds or removes a gpg key from the rpm db
 description:
     - Adds or removes (rpm --import) a gpg key to your rpm database.
 version_added: "1.3"
 options:
     key:
-      required: true
-      default: null
-      aliases: []
       description:
           - Key that will be modified. Can be a url, a file, or a keyid if the key already exists in the database.
+      required: true
     state:
-      required: false
-      default: "present"
-      choices: [present, absent]
       description:
           - If the key will be imported or removed from the rpm db.
+      default: present
+      choices: [ absent, present ]
     validate_certs:
       description:
           - If C(no) and the C(key) is a url starting with https, SSL certificates will not be validated. This should only be used
             on personally controlled sites using self-signed certificates.
-      required: false
+      type: bool
       default: 'yes'
-      choices: ['yes', 'no']
-
 '''
 
 EXAMPLES = '''
@@ -193,11 +187,11 @@ class RpmKey(object):
 def main():
     module = AnsibleModule(
         argument_spec=dict(
-            state=dict(default='present', choices=['present', 'absent'], type='str'),
+            state=dict(type='str', default='present', choices=['absent', 'present']),
-            key=dict(required=True, type='str'),
+            key=dict(type='str', required=True),
-            validate_certs=dict(default='yes', type='bool'),
+            validate_certs=dict(type='bool', default=True),
         ),
-        supports_check_mode=True
+        supports_check_mode=True,
     )
 
     RpmKey(module)

test/sanity/pep8/legacy-files.txt

@@ -270,7 +270,6 @@ lib/ansible/modules/packaging/os/pkgng.py
 lib/ansible/modules/packaging/os/pkgutil.py
 lib/ansible/modules/packaging/os/portage.py
 lib/ansible/modules/packaging/os/portinstall.py
-lib/ansible/modules/packaging/os/rpm_key.py
 lib/ansible/modules/packaging/os/sorcery.py
 lib/ansible/modules/packaging/os/svr4pkg.py
 lib/ansible/modules/packaging/os/swdepot.py