[jdk11u-dev] RFR: 8294137: Review running times of java.math tests

[Amos Shi]

Backport of [JDK-8294137](https://bugs.openjdk.org/browse/JDK-8294137)

Testing
- Local: Test passed
  - `BigIntegerTest.java`: Test results: passed: 1
  - `LargeValueExceptions.java`: Test results: passed: 1
  - `SymmetricRangeTests.java`: Test results: passed: 1
- Pipeline: 
- Testing Machine:

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Commit messages:
 - Backport 51035a75e493f64b26f78e7fc87f6f6e536e4f56

Changes: https://git.openjdk.org/jdk11u-dev/pull/2689/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2689&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294137
  Stats: 132 lines in 3 files changed: 53 ins; 8 del; 71 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2689.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2689/head:pull/2689

PR: https://git.openjdk.org/jdk11u-dev/pull/2689