define local_dns if dns tag used (#531)

algo

@@ -40,7 +40,7 @@ read -p "
 Do you want to install a DNS resolver on this VPN server, to block ads while surfing?
 [y/N]: " -r dns_enabled
 dns_enabled=${dns_enabled:-n}
-if [[ "$dns_enabled" =~ ^(y|Y)$ ]]; then ROLES+=" dns"; EXTRA_VARS+=" local_dns=Y"; fi
+if [[ "$dns_enabled" =~ ^(y|Y)$ ]]; then ROLES+=" dns"; fi
 
 read -p "
 Do you want each user to have their own account for SSH tunneling?

playbooks/facts/main.yml

@@ -35,3 +35,9 @@
 - name: Define the commonName
   set_fact:
     IP_subject_alt_name: "{{ IP_subject_alt_name }}"
+
+- name: The DNS tag is defined
+  set_fact:
+    local_dns: Y
+  tags:
+    - dns