Adds buffered configurers

[fwh-dc]

Adds private key buffer, certificate buffer and certificate chain buffer configurers

[fwh-dc]

Hi @lganzzzo

Hope you have time for this one as well 🙏

[lganzzzo]

Hello @fwh-dc , Looks good!

Please add a test using buffered certs. - you can just use an existing FullTest Just add an option there so it could be run both with file certs and buffered cets.

Regards, Leonid

[fwh-dc]

Good catch @lganzzzo I've added it now.

[lganzzzo]

Hello @fwh-dc ,

Looks good! Please simplify cert loading as described above and it's ready to merge.

Regards, Leonid

[fwh-dc]

Nice, didn't notice you had the functionality.

[lganzzzo]

Great work! Merged!