Steps to reproduce:

1. Install Zabbix Agent2
2. Put ControlSocket=/run/zabbix/agent.sock into zabbix_agent2.d/controlsock.conf
3. Run zabbix-agent2.service

Result:
Zabbix Agent2 creates control socket file ControlSocket=/tmp/agent.sock
Expected:
Zabbix Agent2 creates control socket file ControlSocket=/run/zabbix/agent.sock
Reason:
Directive Include=/etc/zabbix/zabbix_agent2.d/*.conf goes before directive ControlSocket= in zabbix_agent2.conf, so any definition of ControlSocket in included files will be overridden.
Suggested fix:
Move directive Include=/etc/zabbix/zabbix_agent2.d/*.conf to the end of zabbix_agent2.conf.