RFR: 8318240: [AIX] Cleaners.java test failure

[Varada M]

When the test sets the sun.security.jgss.native and sun.security.nativegss.debug as true, the test fails on AIX due to missing Kerberos GSS API dynamic library` libgssapi_krb5.so` 

JBS Issue : [JDK-8318240](https://bugs.openjdk.org/browse/JDK-8318240)

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Commit messages:
 - fix for Cleaners.java

Changes: https://git.openjdk.org/jdk/pull/16212/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16212&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318240
  Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/16212.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16212/head:pull/16212

PR: https://git.openjdk.org/jdk/pull/16212