fix(tooling): Fix test user missing access token

Author: bzang

Jenkinsfile

@@ -67,11 +67,16 @@ ansiColor('xterm') {
           }
 
           stage('Install') {
-            sh '''#!/bin/bash -ex
-            source ~/.nvm/nvm.sh
-            nvm use v6
-            npm install
-            '''
+            withCredentials([
+              string(credentialsId: 'NPM_TOKEN', variable: 'NPM_TOKEN')
+            ]) {
+              sh '''#!/bin/bash -ex
+              source ~/.nvm/nvm.sh
+              nvm use v6
+              sh 'echo \'//registry.npmjs.org/:_authToken=${NPM_TOKEN}\' > $HOME/.npmrc'
+              npm install
+              '''
+            }
           }
 
           stage('Static Analysis') {