Need to expand the test framework to support reboot testing

Some test scenarios we need to support:

Running tests with reboot and test rerun:
1) start the a named configuration
2) run the tests with a system property to identify the before stage
3) reboot the named configuration
4) run the tests with a system property to identify the after stage

Running tests with reboot controlled by test:
1) start the a named configuration
2) start a test
3) test signals reboot the named configuration
4) test waits for reboot to complete
5) test resumes and validates expectations

Running tests with reboot while test is running:
1) start the a named configuration
2) start a test
3) test signals reboot the named configuration
4) notify the test that the reboot has completed via a background notification
5) test completes and validates expectations