[CSL-1332] Add better output to VSS certs tests (good for debugging)
[CSL-1332] Add better output to VSS certs tests (good for debugging)

input-output-hk/pos-haskell-prototype,input-output-hk/pos-haskell-prototype,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/cardano-sl