Added debug option to cvmfs module.
Renamed trace option to debug, for consistency.
Added debug option to APF module.
Added debug options in the gce node specification.!
Added Cloud Scheduler node configuration to the Condor module via the 'csnode' role.
Changed non-debugging log level to INFO (from default WARNING) for APF.
Added conditionals for running on CernVM and Debian but without package installation.
fixed a few syntax errors