system test jars get redownloaded again

[llxia]

When running system tests again on the same machine, the system test jars get re-redownloaded again

https://openj9-jenkins.osuosl.org/job/Grinder/3641/consoleFull

00:00:53.838  + perl ./aqa-tests/TKG/scripts/getDependencies.pl -path /home/jenkins/workspace/Grinder/../../testDependency/system_lib -task default -customUrl https://openj9-jenkins.osuosl.org//job/test.getDependency/lastSuccessfulBuild/artifact/
00:00:53.838  --------------------------------------------
00:00:53.838  path is set to /home/jenkins/workspace/Grinder/../../testDependency/system_lib
00:00:53.838  task is set to default
00:00:53.838  dependencyList is set to all
00:00:53.838  --------------------------------------------
00:00:53.838  Starting download third party dependent jars
00:00:53.838  --------------------------------------------
00:00:53.838  downloading dependent third party jars to /home/jenkins/workspace/Grinder/../../testDependency/system_lib
00:00:53.838  /home/jenkins/workspace/Grinder/../../testDependency/system_lib/org.eclipse.osgi-3.16.100.jar exists with correct hash, not downloading
00:00:53.838  /home/jenkins/workspace/Grinder/../../testDependency/system_lib/junit-jupiter-engine.jar exists with correct hash, not downloading
00:00:53.838  /home/jenkins/workspace/Grinder/../../testDependency/system_lib/objenesis.jar exists with correct hash, not downloading
00:00:53.838  downloading https://openj9-jenkins.osuosl.org//job/systemtest.getDependency/lastSuccessfulBuild/artifact/systemtest_prereqs/log4j/log4j-core.jar
00:00:54.311  --> file downloaded to /home/jenkins/workspace/Grinder/../../testDependency/system_lib/log4j/log4j-core.jar
00:00:54.311  Checksum verification skipped for /home/jenkins/workspace/Grinder/../../testDependency/system_lib/log4j/log4j-core.jar
00:00:54.311  downloading https://openj9-jenkins.osuosl.org//job/systemtest.getDependency/lastSuccessfulBuild/artifact/systemtest_prereqs/apache-ant/lib/ant-launcher.jar
00:00:54.783  --> file downloaded to /home/jenkins/workspace/Grinder/../../testDependency/system_lib/apache-ant/lib/ant-launcher.jar
00:00:54.783  Checksum verification skipped for /home/jenkins/workspace/Grinder/../../testDependency/system_lib/apache-ant/lib/ant-launcher.jar
...