fix return code analysis for run of Kind 2 to produce front end certificate
fix return code analysis for run of Kind 2 to produce front end certificate

AdrienChampion/kind2,mebsout/kind2,mebsout/kind2,AdrienChampion/kind2,AdrienChampion/kind2,tinelli/kind2,tinelli/kind2,daniel-larraz/kind2,mebsout/kind2,tinelli/kind2,mebsout/kind2,mebsout/kind2,mebsout/kind2,mebsout/kind2,AdrienChampion/kind2,AdrienChampion/kind2,mebsout/kind2,tinelli/kind2,AdrienChampion/kind2,tinelli/kind2,tinelli/kind2,kind2-mc/kind2,AdrienChampion/kind2,mebsout/kind2,AdrienChampion/kind2,AdrienChampion/kind2