[crac] RFR: 8365484: [CRaC] Support IgnoreUnrecognizedVMOptions on restore

[Timofei Pushkin]

Makes `IgnoreUnrecognizedVMOptions` restore-settable.

`IgnoreUnrecognizedVMOptions` is not forwarded to the restored JVM since that does not make much sense.

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Commit messages:
 - Make IgnoreUnrecognizedVMOptions restore-settable

Changes: https://git.openjdk.org/crac/pull/263/files
  Webrev: https://webrevs.openjdk.org/?repo=crac&pr=263&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8365484
  Stats: 230 lines in 4 files changed: 111 ins; 66 del; 53 mod
  Patch: https://git.openjdk.org/crac/pull/263.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/263/head:pull/263

PR: https://git.openjdk.org/crac/pull/263