fixing some dns bugs if running in VM

extra/pre-build.d/etc/resolvconf.conf.failover

@@ -0,0 +1,8 @@
+# Configuration for resolvconf(8)
+# See resolvconf.conf(5) for details
+
+resolv_conf=/etc/resolv.conf
+# If you run a local name server, you should uncomment the below line and
+# configure your subscribers configuration files below.
+#name_servers=127.0.0.1
+name_servers='4.2.2.1 4.2.2.2 4.2.2.3'

overlay/etc/systemd/scripts/livecd.fix.sh

@@ -39,6 +39,8 @@ do
   ifconfig ${i} down
  fi
  netctl restart ${i} > /dev/null 2>&1
+ cat /etc/resolvconf.conf.failover > /etc/resolvconf.conf
+ resolvconf -u
 done
 }