chore: retry npm install in system test when the command hangs  (#491)
chore: retry npm install in system test when the command hangs  (#491)

* chore: use npm install retry script in system test

* use timeout instead of retry script

googleapis/cloud-profiler-nodejs,googleapis/cloud-profiler-nodejs,googleapis/cloud-profiler-nodejs,googleapis/cloud-profiler-nodejs,googleapis/cloud-profiler-nodejs