Add notification_title and notification_description to dumpstate

Add notification_title and notification_description to dumpstate

Initiator of dumpstate can set dumpstate.options.title and
dumpstate.options.description properties to notify dumpstate the details
that will be used to file a bug. dumpstate will send this information
along with the BUGREPORT_FINISHED intent.

Bug: 33561517
Test: Use the new API to invoke bugreport from TelephonyMonitor and
      ensure that the bugreport is taken and title and description are
      updated properly in the notification. Run dumpstate and
      BugreportReceiver unit tests

Change-Id: Ia23a3ef4d5751be14f347ac38ef7c8a18f79799d