- Get supported OSes, version from the meta info, modify assertion accordingly.

meta/main.yml

@@ -7,7 +7,7 @@ galaxy_info:
   platforms:
   - name: OpenBSD
     versions:
-    - 6.0
+    - '6.0'
   - name: Ubuntu
     versions:
     - xenial

tasks/main.yml

 ---
 # tasks file for example
 
+- name: Load meta vars
+  include_vars:
+      file: meta/main.yml
+      name: meta
+
 - name: Assertions
   assert:
     that:
-        - ansible_os_family in ['OpenBSD', 'Debian']
-        - ansible_lsb.codename in ['xenial', 'trusty', 'precise', 'stretch', 'jessie', 'wheezy'] or ansible_distribution_version in ['6.0']
+        - ansible_distribution in meta.galaxy_info.platforms|map(attribute='name')
+        - |
+            (meta.galaxy_info.platforms|selectattr('name', 'equalto', ansible_distribution)|first).versions|intersect([ansible_distribution_release, ansible_distribution_version])|length > 0