build: increase retries for #33 (#61)

* build: increase retries and timeout for flaky tests

Author: sofisl

ai-platform/snippets/test/predict-image-classification.test.js

@@ -31,7 +31,8 @@ const endpointId = '71213169107795968';
 const project = process.env.CAIP_PROJECT_ID;
 const location = 'us-central1';
 
-describe('AI platform predict image classification', () => {
+describe('AI platform predict image classification', async function () {
+  this.retries(2);
   it('should make predictions using the image classification model', async () => {
     const stdout = execSync(
       `node ./predict-image-classification.js ${local_file} ${endpointId} ${project} ${location}`