Fix wrong JVM arg to set up module path for nashorn/Java 15
Fix wrong JVM arg to set up module path for nashorn/Java 15

and while we are here, update the example to use newer versions
of the jars

apache/jmeter,apache/jmeter,ham1/jmeter,ham1/jmeter,ham1/jmeter,apache/jmeter,apache/jmeter,ham1/jmeter,ham1/jmeter,apache/jmeter