make sure kube-bench fails if command does not exist, add unincluded firewall tasks

ansible/roles/pre-configure/tasks/main.yml

@@ -126,4 +126,4 @@
   when: kube_bench_check_deb.rc == 1
 
 - name: Configure firewall
-  import_tasks: journald.yml
+  import_tasks: firewall.yml

test/pytest/test_system.py

@@ -60,9 +60,7 @@ def test_kubernetes_setup(host):
         "--nosummary",
         "--json"]), capture_output=True)
 
-    if result.rc != 0:
-        print("Docker run failed: ")
-        print(result.stderr)
+    assert result.rc == 0
 
     # kube-bench doesn't give perfectly valid JSON as output. It gives 1 line
     # of valid json per test