Update workspace CLI including allowing default locations
Background
Updating the workspace cli including default workspace locations.
This will replace bolted issues inc #229 (closed)
The final proposal is on the ML https://mail.gnome.org/archives/buildstream-list/2018-September/msg00046.html and this issue and MR's should focus on implementing what was agreed on the ML.
Task description
-
Add default workspace locations -
Update workspace CLI
Acceptance Criteria
When the CLI changes agreed on the ML are implemented.