ifconfig: T2653: bugfix when removing DHCP address
ifconfig: T2653: bugfix when removing DHCP address

DHCP service was not stopped when an DHCP address got removed from the
interface. DHCP service is now always stopped if it is not configured
explicitly.

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x