[test_snmp_traps] Add meaningful changed_when for oc patch

roles/test_snmp_traps/tasks/main.yml

@@ -103,7 +103,7 @@
       ansible.builtin.shell:
         cmd: |
           oc patch stf/default --type='json' -p '[{"op": "replace", "path": "/spec/alerting/alertmanager/receivers/snmpTraps/enabled", "value": false }]'
-      changed_when: false
+      changed_when: 'cmd_output == "servicetelemetry.infra.watch/default patched"'
       register: cmd_output
       failed_when: cmd_output.rc != 0