validate ansible version

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "collections/ansible_collections/community/general"]
 	path = collections/ansible_collections/community/general
 	url = https://github.com/ansible-collections/community.general.git
+[submodule "roles/do1jlr.ansible_version"]
+	path = roles/do1jlr.ansible_version
+	url = https://github.com/roles-ansible/ansible_role_versioncheck.git

.yamllint

@@ -2,7 +2,15 @@
 extends: default
 
 rules:
-  # 150 chars should be enough, but don't fail if a line is longer
+  # 180 chars should be enough, but don't fail if a line is longer
   line-length:
     max: 180
     level: warning
+  comments:
+    min-spaces-from-content: 1
+  comments-indentation: false
+  braces:
+    max-spaces-inside: 1
+  octal-values:
+    forbid-implicit-octal: true
+    forbid-explicit-octal: true

group_vars/all/ansible_version.yml

@@ -0,0 +1,2 @@
+---
+check_ansible_version: '2.20.1'

roles/do1jlr.ansible_version

@@ -0,0 +1 @@
+Subproject commit 2bf5d7c4369a8213b42829b14f78920e9906d099

site.yml

@@ -1 +1,5 @@
 ---
+- name: Check ansible version
+  hosts: localhost
+  roles:
+    - {role: do1jlr.ansible_version, tags: [version, always]}