Depending on the dhcp uci config pidof dnsmasq can return
multiple pids. Fix re-reading of the hostfile by dnsmasq in
such case by sending SIGHUP signal to each of the returned
pids.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
odhcpd daemon has hitless config reload support by means of the
sighup signal; add reload_service function which uses sighup
signal to reload the config
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>