doc(authentication): code excerpt to retrieve token secret

```bash

oc create serviceaccount cicd

oc policy add-role-to-user <role_name> system:serviceaccount:<your_project_name>:cicd -n <your_project_name>

oc serviceaccounts get-token cicd

# below command displays `serviceaccount-token-name` (ex: cicd-token-l9tdx)

oc get secrets --field-selector type=kubernetes.io/service-account-token -n <your_project_name> | grep cicd | head -1 | cut -d " " -f 1

# use this `serviceaccount-token-name` to get secret with jq

oc get secret <serviceaccount-token-name> -o json -n <your_project_name> | jq -r .data.token | base64 -d

```

:warning: don't forget to replace `<your_project_name>` with your OpenShift project name and `<role_name>` with the appropriate role (ask your OpenShift support).