e_test_event: add functions for check event occured

e_test_event: add functions for check event occured

make event queue is retain during tc running.
And add check event functions.
For check event, use setEventCheckpoint() for save event starting point.
and then, use isEventOccuredAfterCheckpoint() for check event occurence
of the window from checkpoint. if event occured, return will be TRUE.

Change-Id: Ie421c67f4a64204752e768221de4c6e815aee1f4