Add option for daemon to continue running after timeout

Added new command line option that lets someone disable the
watchdog timer on timer expiration instead of the default
action of it exiting.

Change-Id: I1c3414d4378872860ac083836cda4809fa26237a
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/timer.hpp b/timer.hpp
index 2ade017..e6b0693 100644
--- a/timer.hpp
+++ b/timer.hpp
@@ -56,6 +56,11 @@
             initialize();
         }
 
+        void clearExpired(void)
+        {
+            expire = false;
+        }
+
         /** @brief Tells whether the timer is expired or not */
         inline auto expired() const
         {