Add com.devture.ansible.role.traefik_certs_dumper role

With this, other roles (like Coturn, Postmoogle) will be able
to use SSL certificates extracted from Traefik
via https://github.com/ldez/traefik-certs-dumper

playbooks/matrix.yml

@@ -118,6 +118,9 @@
     - when: matrix_playbook_traefik_role_enabled | bool
       role: galaxy/com.devture.ansible.role.traefik
 
+    - when: matrix_playbook_traefik_certs_dumper_role_enabled | bool
+      role: galaxy/com.devture.ansible.role.traefik_certs_dumper
+
     - when: devture_systemd_service_manager_enabled | bool
       role: galaxy/com.devture.ansible.role.systemd_service_manager