Add extra options to tools/run-jdwp-tests.sh

Adds options for local debugging:
--verbose: passes '-verbose:jdwp' to the debuggee command-line to
           enable JDWP verbose logs.
--test <name>: runs a specific test instead of the whole test
               suite.

Change-Id: Ia04dd26c16c0b6733bb1c8a1b15ec585a24872c8