updated new conjugate MVN test to check correct posterior
updated new conjugate MVN test to check correct posterior

nxdao2000/nimble,nimble-dev/nimble,NLMichaud/nimble,nimble-dev/nimble,nimble-dev/nimble,nimble-dev/nimble,NLMichaud/nimble,NLMichaud/nimble,nimble-dev/nimble,nxdao2000/nimble,nxdao2000/nimble,nxdao2000/nimble,NLMichaud/nimble