gw-core01: fix dns issues

gigacube could not handle amount of dns queries.

* move dns to quad9 and cloudflare
* increase size of dns cache
* increase amount of concurrent dns queries

templates/gateways/gw-core01/etc/config/dhcp

@@ -17,6 +17,8 @@ config dnsmasq
 	option nonwildcard '1'
 	option localservice '1'
 	option ednspacket_max '1232'
+	option dnsforwardmax 300
+	option cachesize 900
 
 config dhcp 'mgmt'
 	option interface 'mgmt'

templates/gateways/gw-core01/etc/config/network

@@ -74,6 +74,9 @@ config interface 'clients'
 config interface 'wan'
         option device 'switch.3'
         option proto 'dhcp'
+        option peerdns '0'
+        list dns '9.9.9.9'
+        list dns '1.1.1.1'
 
 config interface 'wan6'
         option device 'switch.3'