SNOW-1781419: 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 (Azure)

SNOW-1781419: 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 (Azure) #2783