fix: added retries to flaky test (#299)

Author: nayaknishant

samples/test/create-custom-job.test.js

@@ -43,7 +43,8 @@ function parseResponse(stdout) {
 
 let customJobId;
 
-describe('AI platform create custom job', () => {
+describe('AI platform create custom job', async function () {
+  this.retries(2);
   it('should create a new custom job', async () => {
     const stdout = execSync(
       `node ./create-custom-job.js ${customJobDisplayName} \