unbound(role): fix some unbound setup stuff

roles/unbound/handlers/main.yml

@@ -16,3 +16,8 @@
     name: prometheus-unbound-exporter.service
     state: restarted
     enabled: true
+
+- name: systemd-daemon-reload
+  become: true
+  ansible.builtin.systemd_service:
+    daemon_reload: true

roles/unbound/tasks/main.yml

@@ -40,6 +40,9 @@
         deploy_systemd_resolved_config__dns:
           - 127.0.0.1
 
+    - name: flush handlers
+      ansible.builtin.meta: flush_handlers
+
     - name: ensure unbound is running and enabled
       become: true
       ansible.builtin.systemd: