Previously, test failures could include these outside AWS Commercial:
```
--- FAIL: TestAccAWSEBSSnapshot_withKms (88.99s)
testing.go:684: Step 0 error: Check failed: Check 2/2 error: aws_ebs_snapshot.test: Attribute 'kms_key_id' didn't match "^arn:aws:kms:[a-z]{2}-[a-z]+-\\d{1}:[0-9]{12}:key/[a-z0-9-]{36}$", got "arn:aws-us-gov:kms:us-gov-west-1:123456789012:key/59dff49a-68bc-407d-959c-deb91757d55b"
```
New AWSAT001 check test failures:
```
aws/resource_aws_db_instance_test.go:187:6: AWSAT001: prefer resource.TestCheckResourceAttrPair() or ARN check functions (e.g. testAccMatchResourceAttrRegionalARN)
aws/resource_aws_ebs_snapshot_test.go:127:6: AWSAT001: prefer resource.TestCheckResourceAttrPair() or ARN check functions (e.g. testAccMatchResourceAttrRegionalARN)
aws/resource_aws_fsx_windows_file_system_test.go:92:6: AWSAT001: prefer resource.TestCheckResourceAttrPair() or ARN check functions (e.g. testAccMatchResourceAttrRegionalARN)
aws/resource_aws_rds_cluster_instance_test.go:207:6: AWSAT001: prefer resource.TestCheckResourceAttrPair() or ARN check functions (e.g. testAccMatchResourceAttrRegionalARN)
```
Output from acceptance testing in AWS Commercial:
```
--- PASS: TestAccAWSEBSSnapshot_withKms (41.72s)
--- PASS: TestAccAWSDBInstance_kmsKey (486.55s)
--- PASS: TestAccAWSRDSClusterInstance_kmsKey (691.04s)
```
Output from acceptance testing in AWS GovCloud (US) (hardcoded AZ and service availability PreCheck test failures will be separately addressed in the future):
```
--- PASS: TestAccAWSEBSSnapshot_withKms (60.17s)
--- PASS: TestAccAWSDBInstance_kmsKey (479.81s)
--- FAIL: TestAccAWSRDSClusterInstance_kmsKey (17.37s)
TestAccAWSRDSClusterInstance_kmsKey: testing.go:684: Step 0 error: errors during apply:
Error: error creating RDS cluster: InvalidVPCNetworkStateFault: Availability zones '[us-west-2a, us-west-2b, us-west-2c]' are unavailable in this region, please choose another zone set.
--- FAIL: TestAccAWSFsxWindowsFileSystem_basic (1743.81s)
TestAccAWSFsxWindowsFileSystem_basic: testing.go:684: Step 0 error: errors during apply:
Error: Error creating FSx filesystem: RequestError: send request failed
caused by: Post "https://fsx.us-gov-west-1.amazonaws.com/": dial tcp: lookup fsx.us-gov-west-1.amazonaws.com: no such host
```