acme-dnskey-generate: fix naming inconsistencies

roles/acme-dnskey-generate/defaults/main.yml

@@ -1,5 +1,5 @@
 ---
 
-dnskey_file: "/etc/nsupdate.key"
-dnskey_algorithm: "hmac-sha512"
-dnskey_server: "neon.binary-kitchen.net"
+acme_dnskey_file: "/etc/acme/nsupdate.key"
+acme_dnskey_algorithm: "hmac-sha512"
+acme_dnskey_server: "neon.binary-kitchen.net"

roles/acme-dnskey-generate/tasks/main.yml

@@ -28,7 +28,7 @@
 
 - name: Get nsupdate.key again
   shell: "pdnsutil list-tsig-keys | grep '^acme-{{ inventory_hostname }}. {{ acme_dnskey_algorithm }}'"
-  register: "pdns_key"
+  register: "pdns_nsupdate_key"
   when: "pdns_genkey is defined"
   changed_when: "False"
   delegate_to: "{{ acme_dnskey_server }}"

roles/acme-dnskey-generate/templates/nsupdate.key.j2

@@ -1,4 +1,4 @@
 key acme-{{ inventory_hostname }}. {
-    algorithm {{ acme_nsupdate_keyalgo }};
+    algorithm {{ acme_dnskey_algorithm }};
     secret "{{ pdns_nsupdate_key.stdout.split(' ')[2] }}";
 };