RFR: 8301381: Verify DTLS 1.0 cannot be negotiated

[Matthew Donovan]

This PR implements a test to verify that a DTLS server running "out of the box" (i.e., DTLSv1.0 disabled in java.security) will not handshake with a client requesting DTLSv1.0. The test also implements the opposite: a client won't handshake with a server that uses DTLSv1.0.

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Commit messages:
 - 8301381: Verify DTLS 1.0 cannot be negotiated

Changes: https://git.openjdk.org/jdk/pull/14059/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14059&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301381
  Stats: 320 lines in 1 file changed: 320 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14059.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14059/head:pull/14059

PR: https://git.openjdk.org/jdk/pull/14059