Clean noisy output of `install-test-fixtures.sh` (#461)
Clean noisy output of `install-test-fixtures.sh` (#461)

PR-URL: https://github.com/GoogleCloudPlatform/cloud-trace-nodejs/pull/461
matthewloring/cloud-trace-nodejs,keymetrics/trassingue,googleapis/cloud-trace-nodejs,keymetrics/vxx,matthewloring/cloud-trace-nodejs,googleapis/cloud-trace-nodejs,googleapis/cloud-trace-nodejs,keymetrics/vxx,matthewloring/cloud-trace-nodejs,googleapis/cloud-trace-nodejs,keymetrics/trassingue