Include version in internal stats of remote Zabbix instance

It's sometimes required to make sure that all proxies and/or servers use specific version of Zabbix.

Right now it can be done by executing zabbix_server -V on the remote host to make sure that the binary file is of required version, and by monitoring log file to make sure that it was actually restarted after deploying required version, but that is pretty complicated.

It would be great if there was some built-in way of monitoring version of remote Zabbix instance (e.g., by using zabbix[stats,<ip>,<port>]).