SNOW-1820372: (from 947) when proxy is set in Connection, driver does send traffic through the proxy to S3, but not to Azure blob / GCS bucket (only Snowflake). Works with proxy envvar (GCP)

SNOW-1820372: (from 947) when proxy is set in Connection, driver does send traffic through the proxy to S3, but not to Azure blob / GCS bucket (only Snowflake). Works with proxy envvar (GCP) #4219