[jdk11u-dev] RFR: 8247362: HeapDumpCompressedTest.java#id0 fails due to "Multiple garbage collectors selected"

[Satyen Subramaniam]

Backporting JDK-8247362: HeapDumpCompressedTest.java#id0 fails due to "Multiple garbage collectors selected". Adjusted test to add @ requires for GCs, fixing failure when run with GC directly. Ran GHA Sanity Checks, local Tier 1 and 2, and adjusted test directly. Patch is clean.

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Commit messages:
 - Backport 74500984585c1b93e91931c19d3b95f86e3085ec

Changes: https://git.openjdk.org/jdk11u-dev/pull/3061/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3061&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8247362
  Stats: 24 lines in 1 file changed: 23 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3061.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3061/head:pull/3061

PR: https://git.openjdk.org/jdk11u-dev/pull/3061