fix: rename files to .yaml

tasks/verify_zone_file.yaml

@@ -0,0 +1,13 @@
+---
+
+- name: "Read the last character of DNS zone: {{ zone.config.origin }}"
+  ansible.builtin.command:
+    cmd: "tail --bytes 1 {{ bind_config_directory + '/' + zone.file }}"
+  register: _bind9_zone_last_character
+  changed_when: _bind9_zone_last_character.rc == 0
+  failed_when: _bind9_zone_last_character.rc > 0
+
+- name: "Fail when the last character of DNS zone file is not a newline: {{ bind_config_directory + '/' + zone.file }}"
+  ansible.builtin.fail:
+    msg: "Last character of DNS zone file is not a newline: {{ bind_config_directory + '/' + zone.file }}"
+  when: _bind9_zone_last_character.stdout != ''