[jdk17u-dev] RFR: 8286293: Tests ShortResponseBody and ShortResponseBodyWithRetry should use less resources

[Goetz Lindenmaier]

I backport this test-only change for parity with 17.0.5-oracle.

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Commit messages:
 - Backport f143386109bce2a2e7241f685e2df26849a0ad48

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/401/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=401&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8286293
  Stats: 501 lines in 5 files changed: 315 ins; 172 del; 14 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/401.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/401/head:pull/401

PR: https://git.openjdk.java.net/jdk17u-dev/pull/401