odhcpd: reload on change to service/network cfg
"system" is used to get the current time zone, "network" is used to get
the global DUID.
Signed-off-by: David Härdeman <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20673
Signed-off-by: Álvaro Fernández Rojas <[email protected]>