[jdk17u] RFR: 8272856: DoubleFlagWithIntegerValue uses G1GC-only flag

[Aleksey Shipilev]

Clean backport to fix the test.

Additional testing:
  - [x] Linux x86_64 Minimal VM now passes the test

-------------

Commit messages:
 - Backport 6ace805f8c69b273bf998f084f9651bc5bcd52b6

Changes: https://git.openjdk.java.net/jdk17u/pull/156/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=156&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272856
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/156.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/156/head:pull/156

PR: https://git.openjdk.java.net/jdk17u/pull/156