Adds tags for asserts (#1639)

roles/download/tasks/set_docker_image_facts.yml

@@ -26,3 +26,5 @@
   assert:
     that: "{{download.repo}}:{{download.tag}} in docker_images.stdout.split(',')"
   when: not download_always_pull|bool and not pull_required|bool and pull_by_digest|bool
+  tags:
+    - asserts

roles/kubernetes/preinstall/tasks/pre-upgrade.yml

@@ -2,3 +2,5 @@
 - name: Stop if non systemd OS type
   assert:
     that: ansible_service_mgr == "systemd"
+  tags:
+    - asserts