[jdk11u-dev] RFR: 8325096: Test java/security/cert/CertPathBuilder/akiExt/AKISerialNumber.java is failing

[Aleksey Shipilev]

Clean backport to fix the test.

Additional testing:
 - [x] Affected test fails without the patch, passes with it

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Commit messages:
 - Backport ac1cd3194910793b02e86c2c0dedaa321f137d4e

Changes: https://git.openjdk.org/jdk11u-dev/pull/2509/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2509&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325096
  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2509.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2509/head:pull/2509

PR: https://git.openjdk.org/jdk11u-dev/pull/2509