Fix GovCloud console URL for CloudFormation launch links

Author: Bob Strahan

scripts/generate_govcloud_template.py

@@ -808,6 +808,8 @@ def print_deployment_summary(self, bucket_name: str, prefix: str, region: str, s
         # 1-Click Launch for standard template
         encoded_standard_url = quote(standard_url, safe=":/?#[]@!$&'()*+,;=")
         standard_launch_url = f"https://{region}.console.aws.amazon.com/cloudformation/home?region={region}#/stacks/create/review?templateURL={encoded_standard_url}&stackName=IDP"
+        if "us-gov" in region:
+            standard_launch_url = f"https://{region}.console.amazonaws-us-gov.com/cloudformation/home?region={region}#/stacks/create/review?templateURL={encoded_standard_url}&stackName=IDP"
         print(f"1-Click Launch (creates new stack):")
         print(f"  {standard_launch_url}")
         print(f"Template URL (for updating existing stack):")