Increase MaxIdleConnsPerHost based on requests-per-probe parameter.
Increase MaxIdleConnsPerHost based on requests-per-probe parameter.

Without this option, keep-alive and parallel probing (multiple requests per probe) don't work very well together.

Note: Default MaxIdleConnsPerHost is 2.
PiperOrigin-RevId: 388287864

google/cloudprober,cloudprober/cloudprober,cloudprober/cloudprober,cloudprober/cloudprober,google/cloudprober