feat: Surface $retry_attempts to retryFunction for observation (#3233)
feat: Surface $retry_attempts to retryFunction for observation (#3233)


jdpedrie/google-cloud-php,jdpedrie/google-cloud-php,jdpedrie/google-cloud-php,chingor13/google-cloud-php,chingor13/google-cloud-php,googleapis/google-cloud-php,googleapis/google-cloud-php,googleapis/google-cloud-php,chingor13/google-cloud-php