feat(client-cost-and-usage-report-service): Add v2 smoke tests and smithy smokeTests trait for SDK testing.

Author: awstools

codegen/sdk-codegen/aws-models/cost-and-usage-report-service.json

@@ -1077,7 +1077,20 @@
           "inputToken": "NextToken",
           "outputToken": "NextToken",
           "pageSize": "MaxResults"
-        }
+        },
+        "smithy.test#smokeTests": [
+          {
+            "id": "DescribeReportDefinitionsSuccess",
+            "params": {},
+            "vendorParams": {
+              "region": "us-east-1"
+            },
+            "vendorParamsShape": "aws.test#AwsVendorParams",
+            "expect": {
+              "success": {}
+            }
+          }
+        ]
       }
     },
     "com.amazonaws.costandusagereportservice#DescribeReportDefinitionsRequest": {