Ecal templates from740p1

This pull request contains the DB objects and the records for the inputs of multifit ECAL local reconstruction (noise model: EcalSamplesCorrelation ; EcalPulseShapes ; EcalPulseCovariances)
This includes the PR #6703.

When the PR will be merged in 7.4.X, we will populate the GT and make another PR with the needed modification of the ECAL local reconstruction to use the new objects.