[jdk17u-dev] RFR: 8367133: DTLS: fragmentation of Finished message results in handshake failure

[Goetz Lindenmaier]

I backport this for parity with 17.0.18-oracle,

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Commit messages:
 - Backport 80cb0ead502ae439660f2a3bbab42df4da39d9d6

Changes: https://git.openjdk.org/jdk17u-dev/pull/4068/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4068&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367133
  Stats: 78 lines in 2 files changed: 75 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4068.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4068/head:pull/4068

PR: https://git.openjdk.org/jdk17u-dev/pull/4068