Re-enable openjdk test - jdk_jmx

[llxia]

jdk_jmx got excluded as part of the general exclude a while back via #10757.

https://github.com/adoptium/aqa-tests/blob/a498becc695f7bdeaa7c4b3752c827e65aa7e123/openjdk/playlist.xml#L1620

My limited testing on JDK11 xlinux passed 244 testes and 4 failed. We should look into re-enabling this test.

# TESTCASES RESULTS SUMMARY: passed: 244; failed: 3; error: 1; skipped: 0 
1..1
not ok 1 - jdk_jmx_0
  ---
    output:
      |
        Failed test cases: 
        TEST: javax/management/MBeanServer/OldMBeanServerTest.java
        TEST: javax/management/mxbean/LeakTest.java
        TEST: javax/management/remote/mandatory/notif/ListenerScaleTest.java
        TEST: javax/management/security/HashedPasswordFileTest.java
        Test results: passed: 244; failed: 3; error: 1
    duration_ms: 368171
  ...

[github-actions]

Issue Number: 20587
Status: Open
Recommended Components: comp:test, comp:vm, comp:build
Recommended Assignees: pshipton, jasonfengj9, llxia

[llxia]

TEST: javax/management/mxbean/LeakTest.java

For Error evaluating expression: invalid boolean value: 'null' for expression vm.opt.final.ClassUnloading'`, https://github.com/fengxue-IS/openj9-openjdk-jdk11/blob/openj9/closed/test/jtreg-ext/requires/OpenJ9PropsExt.java will be updated. Similar to https://github.com/fengxue-IS/openj9-openjdk-jdk19/blob/openj9/closed/test/jtreg-ext/requires/OpenJ9PropsExt.java#L55C13-L55C61