Update SmokeTests LIB_DIR path

[LongyuZhang]

• SmokeTests have different LIB_DIR path than normal tests
• Related Issue: SmokeTests compilation failed and block other tests eclipse-openj9/openj9#19122

[llxia]

The smoke test builds and regular test builds have different path (below). This caused a wrong LIB_DIR in the smoke tests.

For example, the smoke test builds have folder build-scripts/jobs/jdk17u:

/home/jenkins/workspace/build-scripts/jobs/jdk17u/jdk17u-linux-s390x-openj9-IBM_SmokeTests/../../testDependency/lib/jcommander.jar

This PR addresses the LIB_DIR issue for smoke test builds, enabling us to utilize pre-staged libraries. However, it would be preferable to have consistent folder structures across all test builds.

[LongyuZhang]

Test Links:

• For pipeline name with SmokeTests (link):

14:35:11  Starting download third party dependent jars
14:35:11  --------------------------------------------
14:35:11  downloading dependent third party jars to /home/jenkins/workspace/build-scripts/jobs/jdk11u/jdk11u-linux-x64-openj9_SmokeTests_longyu/../../../../../testDependency/lib
14:35:11  /home/jenkins/workspace/build-scripts/jobs/jdk11u/jdk11u-linux-x64-openj9_SmokeTests_longyu/../../../../../testDependency/lib/testng.jar exists with correct hash, not downloading

• Logged onto the machine, dependency jars are in /home/jenkins/testDependency/lib

• For normal pipeline, e.g. Grinder (hyc 39197), is still the same as previous:
  14:56:18 downloading dependent third party jars to /home/jenkins/workspace/Grinder/../../testDependency/lib

[llxia]

Thanks @LongyuZhang