Add fail2ban role and clean up yaml lint noise

roles/ensure_hostname/defaults/main.yml

@@ -1,2 +1,2 @@
 ---
-# defaults file for ensure_hostname
+...

roles/ensure_hostname/handlers/main.yml

@@ -1,2 +1,2 @@
 ---
-# handlers file for ensure_hostname
+...

roles/ensure_hostname/meta/main.yml

@@ -1,3 +1,4 @@
+---
 galaxy_info:
   author: your name
   description: your role description
@@ -15,7 +16,6 @@ galaxy_info:
   # - Apache-2.0
   # - CC-BY-4.0
   license: license (GPL-2.0-or-later, MIT, etc)
-
   min_ansible_version: 2.1
 
   # If this a Container Enabled role, provide the minimum Ansible Container version.
@@ -38,7 +38,6 @@ galaxy_info:
   #   - 1.0
   #   - 7
   #   - 99.99
-
   galaxy_tags: []
     # List tags for your role here, one per line. A tag is a keyword that describes
     # and categorizes the role. Users find roles by searching for tags. Be sure to
@@ -46,7 +45,6 @@ galaxy_info:
     #
     # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
     #       Maximum 20 tags per role.
-
 dependencies: []
   # List your role dependencies here, one per line. Be sure to remove the '[]' above,
   # if you add dependencies to this list.

roles/ensure_hostname/tasks/main.yml

@@ -1,10 +1,8 @@
 ---
 # tasks file for ensure_hostname
-- name: 'Set hostname if localhost'
+- name: Set hostname if localhost
   when:
     - ansible_facts["system"] == 'Linux'
     - ansible_facts["fqdn"] == 'localhost.localdomain'
   ansible.builtin.hostname:
     name: '{{ inventory_hostname }}'
-...
-

roles/ensure_hostname/tests/test.yml

@@ -1,5 +1,4 @@
 ---
 - hosts: localhost
   remote_user: root
-  roles:
-    - ensure_hostname
+  roles: [ensure_hostname]

roles/ensure_hostname/vars/main.yml

@@ -1,2 +1,2 @@
 ---
-# vars file for ensure_hostname
+...