Merge #2063

2063: fixed ipv6 access-control r=mergify[bot] a=ghostwheel42

## What type of PR?

bug-fix

## What does this PR do?

fixes access-control for SUBNET6


Co-authored-by: Alexander Graf <ghostwheel42@users.noreply.github.com>

optional/unbound/unbound.conf

@@ -1,7 +1,7 @@
 server:
   verbosity: 1
   interface: 0.0.0.0
-  {{ 'interface: ::0' if SUBNET6 }}
+{{- '  interface: ::0' if SUBNET6 }}
   logfile: ""
   do-ip4: yes
   do-ip6: {{ 'yes' if SUBNET6 else 'no' }}
@@ -9,7 +9,9 @@ server:
   do-tcp: yes
   do-daemonize: no
   access-control: {{ SUBNET }} allow
-  {{ 'access-control: {{ SUBNET6 }} allow' if SUBNET6 }}
+{%- if SUBNET6 %}
+  access-control: {{ SUBNET6 }} allow
+{%- endif %}
   directory: "/etc/unbound"
   username: unbound
   auto-trust-anchor-file: trusted-key.key