Cleanup headers and imports (#1738)

Cleanup headers and imports

SUMMARY
Mass update of imports, docs fragments and file headers

Many of the amazon.aws module_utils and docs fragments got moved about, update community.aws to reflect this.
Consistently apply the comment headers as documented at https://docs.ansible.com/ansible/devel/dev_guide/developing_modules_documenting.html#python-shebang-utf-8-coding

ISSUE TYPE

Docs Pull Request
Feature Pull Request

COMPONENT NAME
ADDITIONAL INFORMATION
Header cleanup based upon:
https://docs.ansible.com/ansible/devel/dev_guide/developing_modules_documenting.html#python-shebang-utf-8-coding

Begin your Ansible module with #!/usr/bin/python - this “shebang” allows ansible_python_interpreter to work. Follow the shebang immediately with # -*- coding: utf-8 -*- to clarify that the file is UTF-8 encoded.

and
https://docs.ansible.com/ansible/devel/dev_guide/developing_modules_documenting.html#copyright-and-license

After the shebang and UTF-8 coding, add a copyright line with the original copyright holder and a license declaration. The license declaration should be ONLY one line, not the full GPL prefix.
...
Additions to the module (for instance, rewrites) are not permitted to add additional copyright lines other than the default copyright statement if missing:

Reviewed-by: Alina Buzachis

This commit was initially merged in https://github.com/ansible-collections/community.aws
See: ansible-collections/community.aws@a4f20bf

plugins/modules/ec2_placement_group.py

@@ -1,22 +1,21 @@
 #!/usr/bin/python
+# -*- coding: utf-8 -*-
+
 # Copyright (c) 2017 Ansible Project
 # 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
-
-
-DOCUMENTATION = '''
+DOCUMENTATION = r"""
 ---
 module: ec2_placement_group
 version_added: 1.0.0
 short_description: Create or delete an EC2 Placement Group
 description:
-    - Create an EC2 Placement Group; if the placement group already exists,
-      nothing is done. Or, delete an existing placement group. If the placement
-      group is absent, do nothing. See also
-      U(https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html)
-author: "Brad Macpherson (@iiibrad)"
+  - Create an EC2 Placement Group; if the placement group already exists,
+    nothing is done. Or, delete an existing placement group. If the placement
+    group is absent, do nothing. See also
+    U(https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html)
+author:
+  - "Brad Macpherson (@iiibrad)"
 options:
   name:
     description:
@@ -45,12 +44,12 @@
     choices: [ 'cluster', 'spread', 'partition' ]
     type: str
 extends_documentation_fragment:
-- amazon.aws.aws
-- amazon.aws.ec2
-- amazon.aws.boto3
-'''
+  - amazon.aws.common.modules
+  - amazon.aws.region.modules
+  - amazon.aws.boto3
+"""
 
-EXAMPLES = '''
+EXAMPLES = r"""
 # Note: These examples do not set authentication details, see the AWS Guide
 # for details.
 
@@ -77,10 +76,10 @@
     name: my-cluster
     state: absent
 
-'''
+"""
 
 
-RETURN = '''
+RETURN = r"""
 placement_group:
   description: Placement group attributes
   returned: when state != absent
@@ -99,16 +98,17 @@
       type: str
       sample: "cluster"
 
-'''
+"""
 
 try:
     import botocore
 except ImportError:
     pass  # caught by AnsibleAWSModule
 
+from ansible_collections.amazon.aws.plugins.module_utils.botocore import is_boto3_error_code
+from ansible_collections.amazon.aws.plugins.module_utils.retries import AWSRetry
+
 from ansible_collections.community.aws.plugins.module_utils.modules import AnsibleCommunityAWSModule as AnsibleAWSModule
-from ansible_collections.amazon.aws.plugins.module_utils.core import is_boto3_error_code
-from ansible_collections.amazon.aws.plugins.module_utils.ec2 import AWSRetry
 
 
 @AWSRetry.exponential_backoff()

plugins/modules/ec2_placement_group_info.py

@@ -1,19 +1,18 @@
 #!/usr/bin/python
+# -*- coding: utf-8 -*-
+
 # Copyright (c) 2017 Ansible Project
 # 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
-
-
-DOCUMENTATION = r'''
+DOCUMENTATION = r"""
 ---
 module: ec2_placement_group_info
 version_added: 1.0.0
 short_description: List EC2 Placement Group(s) details
 description:
-    - List details of EC2 Placement Group(s).
-author: "Brad Macpherson (@iiibrad)"
+  - List details of EC2 Placement Group(s).
+author:
+  - "Brad Macpherson (@iiibrad)"
 options:
   names:
     description:
@@ -24,13 +23,12 @@
     required: false
     default: []
 extends_documentation_fragment:
-- amazon.aws.aws
-- amazon.aws.ec2
-- amazon.aws.boto3
-
-'''
+  - amazon.aws.common.modules
+  - amazon.aws.region.modules
+  - amazon.aws.boto3
+"""
 
-EXAMPLES = r'''
+EXAMPLES = r"""
 # Note: These examples do not set authentication details or the AWS region,
 # see the AWS Guide for details.
 
@@ -49,10 +47,10 @@
     msg: >
       {{ specific_ec2_placement_groups | json_query("[?name=='my-cluster']") }}
 
-'''
+"""
 
 
-RETURN = r'''
+RETURN = r"""
 placement_groups:
   description: Placement group attributes
   returned: always
@@ -71,14 +69,16 @@
       type: str
       sample: "cluster"
 
-'''
+"""
 
-from ansible_collections.community.aws.plugins.module_utils.modules import AnsibleCommunityAWSModule as AnsibleAWSModule
 try:
-    from botocore.exceptions import (BotoCoreError, ClientError)
+    from botocore.exceptions import BotoCoreError
+    from botocore.exceptions import ClientError
 except ImportError:
     pass  # caught by AnsibleAWSModule
 
+from ansible_collections.community.aws.plugins.module_utils.modules import AnsibleCommunityAWSModule as AnsibleAWSModule
+
 
 def get_placement_groups_details(connection, module):
     names = module.params.get("names")