Add global variable for acme.serguzim.me host

roles/acme_dns/vars/main.yml

@@ -1,6 +1,6 @@
 ---
 acme_dns_svc:
-  domain: acme.serguzim.me
+  domain: "{{ acme_dns.host }}"
   name: acme-dns
   port: 80
   nsadmin: "{{ admin_email | regex_replace('@', '.') }}"

roles/caddy/vars/main.yml

@@ -2,7 +2,7 @@
 caddy_acmedns_user: "{{ vault_caddy.acmedns.user }}"
 caddy_acmedns_pass: "{{ vault_caddy.acmedns.pass }}"
 caddy_acmedns_subd: "{{ vault_caddy.acmedns.subd }}"
-caddy_acmedns_url: "https://acme.serguzim.me"
+caddy_acmedns_url: "https://{{ acme_dns.host }}"
 
 caddy_ports_default:
   - 80:80