Merge branch '6156-remove-dnssec-lookaside-auto-from-named-conf-options-master' into 'develop'

Resolve "Remove dnssec-lookaside auto; from named.conf.options.master"

Closes #6156

See merge request ispconfig/ispconfig3!1476

Author: Marius Burkard

install/tpl/named.conf.options.master

@@ -20,7 +20,6 @@ options {
 	//========================================================================
 	dnssec-enable yes;
 	dnssec-validation yes;
-	dnssec-lookaside auto;
 
 	version "unknown";