Set the hostname when localhost is found

tasks/main.yml

@@ -1,2 +1,8 @@
 ---
 # tasks file for ensure_hostname
+- name: 'Set hostname if localhost'
+  when:
+    - ansible_system == 'Linux'
+    - ansible_fqdn == 'localhost.localdomain'
+  ansible.builtin.hostname:
+    name: '{{ inventory_hostname }}'