ec2_vpc_vgw_info - update to not throw an error when run in check_mode (

#1331) (#1336)

[PR #1331/ed4165d6 backport][stable-4] ec2_vpc_vgw_info - update to not throw an error when run in check_mode

This is a backport of PR #1331 as merged into main (ed4165d).
SUMMARY
fixes: #137
ec2_vpc_vgw_info currently throws an error when run in check_mode (it's using "DryRun") this unexpected and undocumented behaviour, and is the same practical effect as not supporting check_mode at all.
ISSUE TYPE

Feature Pull Request

COMPONENT NAME
plugins/modules/ec2_vpc_vgw_info.py
ADDITIONAL INFORMATION

Reviewed-by: Mark Chappell <None>

changelogs/fragments/137-ec2_vpc_vgw_info.yml

@@ -0,0 +1,2 @@
+minor_changes:
+- ec2_vpc_vgw_info - updated to not throw an error when run in check_mode (https://github.com/ansible-collections/community.aws/issues/137).

plugins/modules/ec2_vpc_vgw_info.py

@@ -12,7 +12,7 @@
 version_added: 1.0.0
 short_description: Gather information about virtual gateways in AWS
 description:
-  - Gather information about virtual gateways in AWS.
+  - Gather information about virtual gateways (VGWs) in AWS.
 options:
   filters:
     description:
@@ -21,7 +21,7 @@
     type: dict
   vpn_gateway_ids:
     description:
-      - Get details of a specific Virtual Gateway ID. This value should be provided as a list.
+      - Get details of a specific Virtual Gateway ID.
     type: list
     elements: str
 author:
@@ -151,7 +151,6 @@ def list_virtual_gateways(client, module):
     params = dict()
 
     params['Filters'] = ansible_dict_to_boto3_filter_list(module.params.get('filters'))
-    params['DryRun'] = module.check_mode
 
     if module.params.get("vpn_gateway_ids"):
         params['VpnGatewayIds'] = module.params.get("vpn_gateway_ids")
@@ -168,7 +167,7 @@ def list_virtual_gateways(client, module):
 def main():
     argument_spec = dict(
         filters=dict(type='dict', default=dict()),
-        vpn_gateway_ids=dict(type='list', default=None, elements='str')
+        vpn_gateway_ids=dict(type='list', default=None, elements='str'),
     )
 
     module = AnsibleAWSModule(argument_spec=argument_spec, supports_check_mode=True)

tests/integration/targets/ec2_vpc_vgw/tasks/main.yml

@@ -76,10 +76,11 @@
 
     # ============================================================
 
-    - name: get VPC VGW facts by ID
+    - name: get VPC VGW facts by ID (CHECK)
       ec2_vpc_vgw_info:
         vpn_gateway_ids: ['{{ vgw_id }}']
       register: vgw_info
+      check_mode: True
 
     - name: verify expected facts
       vars: