[monitoring] fix: use the same random value for retry - #3900

[monitoring] fix: use the same random value for retry#3900

tmatsuo merged 3 commits into

GoogleCloudPlatform:masterGoogleCloudPlatform/python-docs-samples:masterfrom

tmatsuo:fix-monitoringtmatsuo/python-docs-samples:fix-monitoringCopy head branch name to clipboard