Update with GA endpoint rules and tests

Author: dagnir

services/accessanalyzer/src/main/resources/codegen-resources/endpoint-rule-set.json

@@ -1,9 +1,9 @@
 {
-    "version": "1.3",
+    "version": "1.0",
     "parameters": {
         "Region": {
             "builtIn": "AWS::Region",
-            "required": true,
+            "required": false,
             "documentation": "The AWS region used to dispatch the request.",
             "type": "String"
         },