Previously we've tried to determine the type of TRAP and handle as many
as possible via generic method dispatcher similar to parent class. Let's
make code simpler by explicitly ignoring all but 'location-state'
TRAPs. This should also reduce debug log output because we'll only log
the TRAP variable for ignored messages instead of entire content.
Change-Id: I42b715cb82eb309950ff387649726504b6c7cf61
Related: SYS#4399