Add the damn short hostname to /etc/hosts automagically

data/hooks/conf_regen/43-dnsmasq

@@ -64,6 +64,11 @@ do_post_regen() {
       systemctl restart resolvconf
   fi
 
+  # Some stupid things like rabbitmq-server used by onlyoffice won't work if
+  # the *short* hostname doesn't exists in /etc/hosts -_-
+  short_hostname=$(hostname -s)
+  grep -q "127.0.0.1.*$short_hostname" /etc/hosts || echo -e "127.0.0.1\t$short_hostname" >>/etc/hosts
+
   [[ -z "$regen_conf_files" ]] \
     || service dnsmasq restart
 }