Updated API models and rebuilt service gems.

Author: AWS SDK for Ruby

apis/appsync/2017-07-25/api-2.json

@@ -595,7 +595,8 @@
         {"shape":"ThrottlingException"},
         {"shape":"InternalServiceException"},
         {"shape":"ResourceConflictException"}
-      ]
+      ],
+      "idempotent":true
     },
     "DeleteContactFlow":{
       "name":"DeleteContactFlow",
@@ -644,7 +645,8 @@
         {"shape":"ThrottlingException"},
         {"shape":"InternalServiceException"},
         {"shape":"ResourceConflictException"}
-      ]
+      ],
+      "idempotent":true
     },
     "DeleteHoursOfOperation":{
       "name":"DeleteHoursOfOperation",
@@ -5972,7 +5974,7 @@
       "type":"list",
       "member":{"shape":"EvaluationFormItem"},
       "max":100,
-      "min":0
+      "min":1
     },
     "EvaluationFormNumericQuestionAutomation":{
       "type":"structure",
@@ -6090,7 +6092,8 @@
       "type":"structure",
       "required":[
         "Title",
-        "RefId"
+        "RefId",
+        "Items"
       ],
       "members":{
         "Title":{"shape":"EvaluationFormSectionTitle"},
@@ -6199,7 +6202,7 @@
     "EvaluationFormTitle":{
       "type":"string",
       "max":128,
-      "min":0
+      "min":1
     },
     "EvaluationFormVersionIsLocked":{"type":"boolean"},
     "EvaluationFormVersionStatus":{
@@ -9350,7 +9353,7 @@
     "ReferenceId":{
       "type":"string",
       "max":40,
-      "min":0
+      "min":1
     },
     "ReferenceKey":{
       "type":"string",
@@ -9478,7 +9481,7 @@
     },
     "ResourceId":{
       "type":"string",
-      "max":50,
+      "max":500,
       "min":1
     },
     "ResourceInUseException":{

apis/appsync/2017-07-25/docs-2.json

@@ -74,6 +74,7 @@
         "af-south-1",
         "ap-east-1",
         "ap-south-1",
+        "ap-south-2",
         "ap-southeast-1",
         "ap-southeast-2",
         "ap-southeast-3",
@@ -82,6 +83,7 @@
         "ap-northeast-3",
         "ca-central-1",
         "eu-central-1",
+        "eu-central-2",
         "eu-west-1",
         "eu-west-2",
         "eu-west-3",
@@ -279,7 +281,10 @@
     },
     "SchemaElement":{
       "type":"string",
-      "enum":["RESOURCES"]
+      "enum":[
+        "RESOURCES",
+        "SPLIT_COST_ALLOCATION_DATA"
+      ]
     },
     "SchemaElementList":{
       "type":"list",