[8u] TLSv1.3 RFR: 8247276: Backport JDK-8161973 to JDK8u

[Alexey Bakhtin]

Please review changes required to backport TLSv1.3 protocol from JDK11.0.7 to JDK8u

This patch backports JDK-8161974 into JDK8u (implementation part only).
Original patch [1] applies cleanly and original commit message will be preserved.
The test part will be backported as part of JDK-8245681 [2]:
test/java/security/cert/PKIXRevocationChecker/OcspUnauthorized.java
test/javax/net/ssl/Stapling/SSLSocketWithStapling.java
The necessity of this patch has been discussed in [3]


JBS task: https://bugs.openjdk.java.net/browse/JDK-8247276
Webrev: http://cr.openjdk.java.net/~abakhtin/tls1.3/8245466/8247276/webrev.v0/

[1] - http://hg.openjdk.java.net/jdk10/jdk10/jdk/rev/4cab82804a44
[2] - http://cr.openjdk.java.net/~abakhtin/tls1.3/8245466/8245681/webrev.v0/
[3] - https://mail.openjdk.java.net/pipermail/jdk8u-dev/2020-June/011916.html

Regards
Alexey