Use secret ID for NOMAD_TOKEN as the accessor ID doesn't seem to work.
I tried with a local micro cluster following the tutorials, and if I do:
```console
$ export NOMAD_TOKEN=85310d07-9afa-ef53-0933-0c043cd673c7
```
Using the accessor ID as in this example, I get an error:
```
Error querying jobs: Unexpected response code: 403 (ACL token not found)
```
But when using the secret ID in that env var it seems to work correctly.