unbound: expand UCI to cover some popular dnsmasq features

Unbound+DHCP (server of your choice) should be able to replicate
a lot of what dnsmasq provides. With this change set Unbound
still works with dnsmasq, but also it can work with a plain
DHCP server. Features have been added within the UCI itself
to act like dnsmasq.

- alone: name each interface relative to router hostname
- alone: prevent upstream leakage of your domain and '.local'
- dnsmasq: use dnsmasq UCI to configure forwarding clauses
- dhcp: work with odhcpd as example of companion DHCP-DNS
- dhcp: convert DHCPv4 leases into EUI64 SLAAC for DNS records
- all: enable encrypted remote unbound-control using splice conf
- all: allow user spliced conf-files for hybrid UCI and manual conf
-- 'unbound_srv.conf' will be spliced into the 'server:' clause
-- 'unbound_ext.conf' will add clauses to the end, example 'forward:'

README HOW TO for dnsmasq-in-serial, dnsmasq-in-parallel, and
unbound-with-odhcpd have better/added UCI starters. HOW TO for
including unbound_srv.conf and unbound_ext.conf are added.
Document new UCI: add_local_fqdn, add_wan_fqdn, dhcp4_slaac6,
dhcp_link, domain, and domain_type

Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>

net/unbound/files/unbound.init

@@ -20,8 +20,10 @@ PROG=/usr/sbin/unbound
 ##############################################################################
 
 start_service() {
-  unbound_prepare
+  # complex UCI work
+  unbound_start
 
+  # standard procd clause
   procd_open_instance
   procd_set_param command $PROG -d -c $UNBOUND_CONFFILE
   procd_set_param respawn
@@ -31,15 +33,13 @@ start_service() {
 ##############################################################################
 
 stop_service() {
-  rootzone_update
+  unbound_stop
 }
 
 ##############################################################################
 
 service_triggers() {
-  procd_add_reload_trigger "dhcp"
-  procd_add_reload_trigger "network"
-  procd_add_reload_trigger "unbound"
+  procd_add_reload_trigger "dhcp" "network" "unbound"
 }
 
 ##############################################################################