sample thcovmat only for L2 data, not L1 #2280
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To do a closure test of alphas determinations with the TCM we want to sample the theory covmat in the generation of L2 data, but not in the generation of L1 data. So there should be a separate key to activate sampling in the latter rather than using
use_thcovmat_in_sampling
to decide wether the covmat should be used both at L1 and L2.Having said that, there are plans to also include MHOUs in a closure test which would complicate things since then we want to use the MHOU covmat in the L1 sampling but not the alphas covmat. Not sure how this can be done somewhat elegantly...