Default Service Account in 0.8.0

[danielhelfand]

With Pipelines 0.8.0, there will be a default service account for Pipelines and the workshop should be updated to take this into account.

The default service account will allow pipeline runs to be triggered through the web console, which should be highlighted via this workshop.

Information on the service account portion of this workshop should explain this feature of 0.8.0.

CLI commands that utilize the service account should also be updated to account for this.