Amazon API Gateway Update: Add v2 smoke tests and smithy smokeTests trait for SDK testing.

Author: AWS

.changes/next-release/feature-AmazonAPIGateway-96de256.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "Amazon API Gateway",
+    "contributor": "",
+    "description": "Add v2 smoke tests and smithy smokeTests trait for SDK testing."
+}

services/apigateway/src/main/resources/codegen-resources/service-2.json

@@ -4,10 +4,12 @@
     "apiVersion":"2015-07-09",
     "endpointPrefix":"apigateway",
     "protocol":"rest-json",
+    "protocols":["rest-json"],
     "serviceFullName":"Amazon API Gateway",
     "serviceId":"API Gateway",
     "signatureVersion":"v4",
-    "uid":"apigateway-2015-07-09"
+    "uid":"apigateway-2015-07-09",
+    "auth":["aws.auth#sigv4"]
   },
   "operations":{
     "CreateApiKey":{