End user build without openssl source dependency

It looks the openssl source code is needed build time only to run ```mkerr.pl``` to update `e_qat_err*`. Correct?

Given we don't necessarily need to rebuild openssl (1.1.x) anymore but we can use what distributions provide today, cloning the source looks to be an unnecessary step if you'd be updating `e_qat_err*` separately for each QAT engine release.