Metal3 enable debug access to Ironic CLI

[hardys]

The baremetal Ironic CLI is included in the Ironic container image, but it's currently inconvenient to use since you have to create a configuration file like:

cat /tmp/clouds.yaml 
clouds:
  metal3:
    auth_type: "http_basic"
    endpoint: "https://127.0.0.1:6385"
    baremetal_introspection_endpoint_override: "https://127.0.0.1:5050"
    verify: False
    auth:
      username: "ironic"
      password: "PASSWORD"

Where PASSWORD is retrieved from the ironic-basic-auth secret e.g

kubectl get secret -n metal3-system ironic-basic-auth -o json  | jq -r .data.password | base64 -d

Then if you export OS_CLOUD=metal3 it's possible to use the baremetal command inside the Ironic container.

It would be better if we generated this config inside the container, given that all the necessary information already exists there.