CentOS - Jan 2019 - dhcp-client should send hostname to dhcp/ dns server

Hallo,

what is the right way in centos7 to configure the dhcp-client so that  
the system name is  send to the dhcp/dns server (windows-domain).
I found
DHCP_HOSTNAME="Hostname"
as entry in the device-config of the network-interface.


Thanks for hints

Ralf