P4
The debugger tests might start all debugee using virtual threads when property "main.wrapper" is set.
However, the new mode JTREG_TEST_THREAD_FACTORY do the same thing. The only difference is that it use predefined problemlist names and doesn't set property "main.wrapper" as a part of jtreg properties. So nsk wrapper should set it additionally.
However, the new mode JTREG_TEST_THREAD_FACTORY do the same thing. The only difference is that it use predefined problemlist names and doesn't set property "main.wrapper" as a part of jtreg properties. So nsk wrapper should set it additionally.
