Test against all platforms

molecule/default/molecule.yml

@@ -7,9 +7,6 @@ driver:
     name: virtualbox
 lint:
   name: yamllint
-platforms:
-  - name: instance
-    box: debian/buster64
 provisioner:
   name: ansible
   lint:
@@ -18,3 +15,23 @@ verifier:
   name: testinfra
   lint:
     name: flake8
+
+platforms:
+  # Debian 9 Stretch
+  - name: debian9
+    box: debian/stretch64
+  # Debian 10 Buster
+  - name: debian10
+    box: debian/buster64
+  # Ubuntu 16.04 LTS Xenial Xerus
+  - name: ubuntu1604
+    box: ubuntu/xenial64
+  # Ubuntu 18.04 LTS Bionic Beaver
+  - name: ubuntu1804
+    box: ubuntu/bionic64
+  # Ubuntu 19.04 Disco Dingo
+  - name: ubuntu1904
+    box: ubuntu/disco64
+  # Ubuntu 19.10 Eoan Ermine
+  - name: ubuntu1910
+    box: ubuntu/eoan64