RFR: CODETOOLS-7902949: jcstress: Warm up AllocationProfilingSupport support early

[Aleksey Shipilev]

Like the warmup of AffinitySupport, we better do AllocationProfilingSupport warmup early, so that sanityCheck_Footprints that would run soon would hit the warm code. This saves about 10 ms per forked VM.

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Commit messages:
 - CODETOOLS-7902949: jcstress: Warm up AllocationProfilingSupport support early

Changes: https://git.openjdk.java.net/jcstress/pull/57/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=57&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7902949
  Stats: 16 lines in 1 file changed: 16 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/57.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/57/head:pull/57

PR: https://git.openjdk.java.net/jcstress/pull/57