added --nightly-cvmfs option to SetupProject
Backported --nightly-cvmfs and --nightly-base options from lb-run to SetupProject. It's not strictly needed, but handy while waiting for decommissioning of CMT.
Backported --nightly-cvmfs and --nightly-base options from lb-run to SetupProject. It's not strictly needed, but handy while waiting for decommissioning of CMT.