RFR: 8201778: Speed up test javax/net/ssl/DTLS/PacketLossRetransmission.java

[Fernando Guallini]

The test  `javax/net/ssl/DTLS/PacketLossRetransmission` takes about ~2  to complete. The reason is that, in multiple scenarios, the server/client socket times out after 10 seconds waiting to receive a DatagramPacket that has been removed (to simulate a packet loss). 
After reducing the time out only for such scenarios, the total test execution is completed within ~20 seconds on average. Other scenarios do not throw SocketTimeOut, no need to update.

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Commit messages:
 - fixed typo
 - copyright year
 - shorter time out

Changes: https://git.openjdk.org/jdk/pull/24079/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24079&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8201778
  Stats: 26 lines in 2 files changed: 9 ins; 1 del; 16 mod
  Patch: https://git.openjdk.org/jdk/pull/24079.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24079/head:pull/24079

PR: https://git.openjdk.org/jdk/pull/24079