Enable authentication between agent and assisted-service

Currently AUTH_TYPE is set to none in the config map.
Other clients like the container that reads in the ZTP manifests and registers the cluster in assisted-service also need to authenticate.

There are three authentication types supported by assisted-service: none, rhsso, and local (https://github.com/openshift/assisted-service/blob/4f446b7d3b02b99fdfda89ddb680a294c3a809e6/pkg/auth/authenticator.go#L15)

We will likely be using the local AUTH_TYPE. Using local auth requires generating a token: https://github.com/openshift/assisted-service/commit/3b0e77e1ed5f7559ab1d0793ed9b23f8cc766aed

Example of how to configure local auth: https://github.com/openshift/assisted-service/commit/e2a0806ebc450c68eb0efa6de4486c5e2659c7d1

ncarboni@redhat.com would be able to help with additional information.