Review for 1-line fix to test targets in test/Makefile

[Mandy Chung]

 1-line fix for:
   7013739: jdk_rmi target is missing in the top repo's test/Makefile
It also adds two new rmi regression tests in the ProblemList.txt.  They 
failed due to the port already in use.

Webrev at:
   http://cr.openjdk.java.net/~mchung/7013739/webrev.00/

Thanks
Mandy