Add support for retryable property on testkit

Author: bigmontz

packages/testkit-backend/deno/controller.ts

@@ -37,6 +37,8 @@ function newWire(context: Context, reply: Reply): Wire {
               msg: e.message,
               // @ts-ignore Code Neo4jError does have code
               code: e.code,
+              // @ts-ignore Code Neo4jError does retryable
+              retryable: e.retriable,
             },
           });
         }

packages/testkit-backend/src/controller/local.js

@@ -70,7 +70,8 @@ export default class LocalController extends Controller {
         this._writeResponse(contextId, newResponse('DriverError', {
           id,
           msg: e.message,
-          code: e.code
+          code: e.code,
+          retryable: e.retriable
         }))
       }
       return

packages/testkit-backend/src/feature/common.js

@@ -6,6 +6,7 @@ const features = [
   'Feature:Auth:Bearer',
   'Feature:Auth:Managed',
   'Feature:API:BookmarkManager',
+  'Feature:API:RetryableExceptions',
   'Feature:API:Session:AuthConfig',
   'Feature:API:SSLConfig',
   'Feature:API:SSLSchemes',