Expand support for TLS protocols supported by KTLS.

Backport additional patches merged into OpenSSL's master
branch to support KTLS RX for TLS 1.1 and 1.2 as well as
support for KTLS TX for TLS 1.3.

Reviewed by: brnrd (maintainer)
Sponsored by: Chelsio Communications, Netflix
Differential Revision: https://reviews.freebsd.org/D26261