Add private keys to tests

[alan-ssvlabs]

closes #542

[GalRogozinski]

Hmm
I don't think we need the keys in state comparison... is it possible to remove them

[Zacholme7]

2 small questions, this will help a lot though!

[Zacholme7]

Follow up - Can we just write out the entire TestKeySet to the json file instead?

[alan-ssvlabs]

Follow up - Can we just write out the entire TestKeySet to the json file instead?

Updated to include all variables in the test key set. But for the RSA and EdDSA private keys still there are no native exportation functions, so only the key numeric fields are included.

[Zacholme7]

Thx for including the variables.

As for writing out the keys, can you just write out the PEM? Or it could go from DER into hex

[alan-ssvlabs]

As for writing out the keys, can you just write out the PEM? Or it could go from DER into hex

Now the keys are hex encoded PEM :)