test/watchdog: Test interval update

Adds a test to ensure that setting the interval on the watchdog affects
subsequent resetTimeRemaining() calls.

Tested:
    Ran through a unit test run

Change-Id: Ibff14bbb40d5b93ffd5eaa5149f5cc9822e21d1e
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed