[jdk11u-dev] RFR: 8249773: Upgrade ReceiveISA.java test to be resilient to failure due to stray packets and interference

[Aleksey Shipilev]

Backporting to stabilize the test and for `11.0.13-oracle` parity. Clean backport. Affected tests still passes.

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Commit messages:
 - Backport d8355e0281e19cb2cf9fff070f3c7540de7bcb95

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/118/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=118&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8249773
  Stats: 111 lines in 1 file changed: 66 ins; 33 del; 12 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/118.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/118/head:pull/118

PR: https://git.openjdk.java.net/jdk11u-dev/pull/118