Previously it was possible to provide the your own java option value when invoking the process by providing grinder.properties file at the same folder as the script exists.
However people don't know.. They just try to modify the agent options in the agent.conf file.
So It might be better to provide more flexible way to configure the java execution option.
1. Provide agent.javaopt option in agent.conf to apply the option permanently.
2. Let user be able to configure grinder.jvm.arguments in grinder.properties file at the same folder the script exists when only the security mode is disabled.