Add check to ensure a CMSSW version is availible in the DAQ zone
When creating a L1-HLT key, my understanding is that currently releases can be selected if they are registered as installed in the database. However there are several zones of validity, eg hilton, cdaq and currently L1CE does not check that the release is actually registered as installed on the DAQ.
This lead to an incident last MWGR which the L1 and HLT docs created a key with 11_0_1 which at that time was only installed on the hilton leading to operational issues when the key was used as the release was not installed on the DAQ.
Could we add a check that the release is installed in the cDAQ zone? To me either the release is either can not be selected (ie doesnt appear in the list) or it comes up with an error message and says "not installed in DAQ, go talk to the DAQ doc" or something similar.