Sending client hostname(ip) to ClickHouse by default

[JackyWoo]

Motivation

In production client and ClickHouse are usually not connected directly. So we can not get which client send a query in system.query_log table.

But we need it in some case for examaple log auditing.

How to achieve?

1. For Native protocal: client_hostname
2. For Http protocal: http_referer Add client address to http referer by default #1573

[chernser]

#1573 merged