debug output removed, manual dispatch added

.github/workflows/run-network-tests.yml

@@ -2,6 +2,7 @@ name: run-network-tests
 on:
   pull_request:
     types: [labeled]
+  workflow_dispatch:
 
 jobs:
   run_ansible_tests:

devops/ansible/build-and-run-tests-single-node-playbook.yml

@@ -4,9 +4,6 @@
   become_method: sudo
 
   tasks:
-    - name: debug output
-      debug:
-        msg: the workflow is triggered on new branch
 
     - name: install dependencies
       include_role: