Update wordpress to use service role

roles/wordpress/molecule/default/molecule.yml

@@ -0,0 +1,15 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: podman
+platforms:
+  - name: bullseye
+    image: git.uumas.fi/uumas/molecule-testbed:bullseye-docker
+    command: /lib/systemd/systemd
+    pre_build_image: true
+    privileged: true
+provisioner:
+  name: ansible
+verifier:
+  name: ansible