Change default location for LHCb and LCG Nightlies
Fixes LBCORE-1349
Not a final version yet, top path is hardcoded for the moment until we can can reuse LHCBDEV env variable
Edited by Ben Couturier
Fixes LBCORE-1349
Not a final version yet, top path is hardcoded for the moment until we can can reuse LHCBDEV env variable