tls-simple and tls-full should be converted to generating PKCS8 from PKCS1

[Spikhalskiy]

Following the discussion here:
#21 (comment)

tls-simple and tls-full should be converted from the generation of PKCS1 keys to generation PKCS8.
The main formats supported by the SDKs are PKCS8 and PKCS12.

[azzamalthagafi]

I believe this is fixed with #31