- Add instrumentation utility to automate rs performance tests:

  The RsBench test activity can be launched within instrumentation

- Provide parameter to control test run:
  set the maximum number of loops from test runner,
  the script will send out a message after the test loops exceeds the maxium number

Change-Id: I5fba0543094ef7a8b5eaa6ff9a04367d272b4d65