Enable Optimization:PullPipelining tests (#874)

Author: bigmontz

packages/testkit-backend/src/request-handlers.js

@@ -88,6 +88,9 @@ export function NewDriver (context, data, wire) {
   if ('fetchSize' in data) {
     config.fetchSize = data.fetchSize
   }
+  if ('maxTxRetryTimeMs' in data) {
+    config.maxTransactionRetryTime = data.maxTxRetryTimeMs
+  }
   let driver
   try {
     driver = neo4j.driver(uri, parsedAuthToken, config)
@@ -379,6 +382,7 @@ export function GetFeatures (_context, _params, wire) {
       'Feature:API:Result.Peek',
       'Optimization:EagerTransactionBegin',
       'Optimization:ImplicitDefaultArguments',
+      'Optimization:PullPipelining',
       'Temporary:ConnectionAcquisitionTimeout',
       'Temporary:CypherPathAndRelationship',
       'Temporary:DriverFetchSize',