add langtools_extpath for openj9/ibm

[llxia]

related: #4405

[llxia]

xlinux JDK11: internal/Grinder
xlinux8,17,19: internal/Grinder
windows JDK8,11,17,19: internal/Grinder

The test is excluded in JDK19+ due to the following error. Related to eclipse-openj9/openj9#15264

00:03:21.993  Exception while calling user-specified class: requires.VMProps
00:03:21.993  java.lang.UnsatisfiedLinkError: jdk/test/whitebox/WhiteBox.registerNatives()V
00:03:21.993  	at jdk.test.whitebox.WhiteBox.<clinit>(WhiteBox.java:67)
00:03:21.993  	at requires.VMProps.<clinit>(VMProps.java:64)
00:03:21.993  	at java.base/java.lang.Class.forNameImpl(Native Method)
00:03:21.993  	at java.base/java.lang.Class.forName(Class.java:372)
00:03:21.993  	at java.base/java.lang.Class.forName(Class.java:350)
00:03:21.993  	at com.sun.javatest.regtest.agent.GetJDKProperties.run(GetJDKProperties.java:78)
00:03:21.993  	at com.sun.javatest.regtest.agent.GetJDKProperties.main(GetJDKProperties.java:54)
00:03:21.993  failed to get JDK properties for /home/jenkins/workspace/Grinder/openjdkbinary/j2sdk-image/bin/java -ea -esa -Xmx512m -XX:-UseCompressedOops -Djava.library.path=/home/jenkins/workspace/Grinder/openjdkbinary/openjdk-test-image/jdk/jtreg/native; exit code 1
00:03:21.993  Error: failed to get JDK properties for /home/jenkins/workspace/Grinder/openjdkbinary/j2sdk-image/bin/java -ea -esa -Xmx512m -XX:-UseCompressedOops -Djava.library.path=/home/jenkins/workspace/Grinder/openjdkbinary/openjdk-test-image/jdk/jtreg/native; exit code 1

[renfeiw]

LGTM

[karianna]

failing GH Actions

[llxia]

failing GH Actions

Directories/Files Change Test PR build failures are unrelated to this PR.
This PR is tested via Grinder. See #4415 (comment)

[LongyuZhang]

LGTM