Pi-hole 6 upgrade (#634)

* Updating and removing obsolete environment variables

* Adding FTLCONF_dns_reply_host_IPv4 variable to pi-hole

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Co-authored-by: Ian Rose <tan*****[email protected]>

Author: ian-rose

templates/pi-hole-docker-compose.yml.j2

@@ -27,8 +27,8 @@ services:
       - "443:443/tcp"
     environment:
       TZ: '{{ pihole_timezone }}'
-      WEBPASSWORD: '{{ pihole_password }}'
-      ServerIP: '{{ ansible_facts['default_ipv4']['address'] }}'
+      FTLCONF_webserver_api_password: '{{ pihole_password }}'
+      FTLCONF_dns_reply_host_IPv4: '{{ ansible_facts['default_ipv4']['address'] }}'
 {% if domain_name_enable and domain_name and domain_pihole %}
       VIRTUAL_HOST: {{ domain_pihole }}.{{ domain_name }}
       VIRTUAL_PORT: 80