Cleanup headers and imports (ansible-collections#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/module_utils/transitgateway.py

@@ -1,14 +1,13 @@
+# -*- coding: utf-8 -*-
+
 # Copyright: 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
-
 from copy import deepcopy
 
-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
-from ansible_collections.amazon.aws.plugins.module_utils.ec2 import ansible_dict_to_boto3_filter_list
+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.amazon.aws.plugins.module_utils.transformation import ansible_dict_to_boto3_filter_list
 
 from ansible_collections.community.aws.plugins.module_utils.ec2 import BaseEc2Manager
 from ansible_collections.community.aws.plugins.module_utils.ec2 import Boto3Mixin

plugins/modules/ec2_vpc_vgw.py

@@ -1,12 +1,10 @@
 #!/usr/bin/python
+# -*- coding: utf-8 -*-
+
 # Copyright: 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_vpc_vgw
 short_description: Create and delete AWS VPN Virtual Gateways
 version_added: 1.0.0
@@ -55,13 +53,13 @@
 author:
   - Nick Aslanidis (@naslanidis)
 extends_documentation_fragment:
-  - amazon.aws.ec2
-  - amazon.aws.aws
-  - amazon.aws.boto3
+  - amazon.aws.common.modules
+  - amazon.aws.region.modules
   - amazon.aws.tags
-'''
+  - amazon.aws.boto3
+"""
 
-EXAMPLES = '''
+EXAMPLES = r"""
 - name: Create a new VGW attached to a specific VPC
   community.aws.ec2_vpc_vgw:
     state: present
@@ -100,9 +98,9 @@
     profile: personal
     vpn_gateway_id: vgw-3a9aa123
   register: deleted_vgw
-'''
+"""
 
-RETURN = '''
+RETURN = r"""
 vgw:
   description: A description of the VGW
   returned: success
@@ -133,7 +131,7 @@
       type: str
       returned: success
       example: vpc-123456789abcdef01
-'''
+"""
 
 import time
 
@@ -142,13 +140,14 @@
 except ImportError:
     pass  # Handled by AnsibleAWSModule
 
-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
+from ansible_collections.amazon.aws.plugins.module_utils.botocore import is_boto3_error_code
 from ansible_collections.amazon.aws.plugins.module_utils.ec2 import ensure_ec2_tags
-from ansible_collections.amazon.aws.plugins.module_utils.waiters import get_waiter
+from ansible_collections.amazon.aws.plugins.module_utils.retries import AWSRetry
 from ansible_collections.amazon.aws.plugins.module_utils.tagging import boto3_tag_specifications
 from ansible_collections.amazon.aws.plugins.module_utils.tagging import boto3_tag_list_to_ansible_dict
+from ansible_collections.amazon.aws.plugins.module_utils.waiters import get_waiter
+
+from ansible_collections.community.aws.plugins.module_utils.modules import AnsibleCommunityAWSModule as AnsibleAWSModule
 
 
 # AWS uses VpnGatewayLimitExceeded for both 'Too many VGWs' and 'Too many concurrent changes'

plugins/modules/ec2_vpc_vgw_info.py

@@ -1,12 +1,10 @@
 #!/usr/bin/python
+# -*- coding: utf-8 -*-
+
 # Copyright: 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_vpc_vgw_info
 version_added: 1.0.0
@@ -28,12 +26,12 @@
 author:
   - "Nick Aslanidis (@naslanidis)"
 extends_documentation_fragment:
-  - amazon.aws.aws
-  - amazon.aws.ec2
+  - amazon.aws.common.modules
+  - amazon.aws.region.modules
   - amazon.aws.boto3
-'''
+"""
 
-EXAMPLES = r'''
+EXAMPLES = r"""
 # # Note: These examples do not set authentication details, see the AWS Guide for details.
 
 - name: Gather information about all virtual gateways for an account or profile
@@ -56,9 +54,9 @@
     profile: production
     vpn_gateway_ids: vgw-c432f6a7
   register: vgw_info
-'''
+"""
 
-RETURN = r'''
+RETURN = r"""
 virtual_gateways:
     description: The virtual gateways for the account.
     returned: always
@@ -121,7 +119,7 @@
         type: dict
         returned: success
         example: {"MyKey": "MyValue"}
-'''
+"""
 
 try:
     import botocore
@@ -130,9 +128,10 @@
 
 from ansible.module_utils.common.dict_transformations import camel_dict_to_snake_dict
 
+from ansible_collections.amazon.aws.plugins.module_utils.tagging import boto3_tag_list_to_ansible_dict
+from ansible_collections.amazon.aws.plugins.module_utils.transformation import ansible_dict_to_boto3_filter_list
+
 from ansible_collections.community.aws.plugins.module_utils.modules import AnsibleCommunityAWSModule as AnsibleAWSModule
-from ansible_collections.amazon.aws.plugins.module_utils.ec2 import ansible_dict_to_boto3_filter_list
-from ansible_collections.amazon.aws.plugins.module_utils.ec2 import boto3_tag_list_to_ansible_dict
 
 
 def get_virtual_gateway_info(virtual_gateway):