[jdk11u-dev] RFR: 8256660: Disable DTLS 1.0

[Goetz Lindenmaier]

I backport this for parity with 11.0.24-oracle.

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Commit messages:
 - Backport 16744b34498e7aac59caef8c9b1a3d4d15f8c22e

Changes: https://git.openjdk.org/jdk11u-dev/pull/2584/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2584&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8256660
  Stats: 56 lines in 3 files changed: 27 ins; 5 del; 24 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2584.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2584/head:pull/2584

PR: https://git.openjdk.org/jdk11u-dev/pull/2584