The engine can be loaded simply by calling
it's installed properly you shouldn't need to mess with config files
(We did fix the engine name to be consistent with the other
implementation, so that applications don't need to try both, didn't we?
Otherwise, apps need to try both "tpm2" and "tpm2-tss" engine names.)
No we did not change the engine name. James never answered and I did
not want to just invade his namespace...
Thus we now have 2 names, tpm2-tss is the TCG-TSS one...