Add fix vts fail when configureMonitorEvent

[Description]
VTS StartFilterInDemux failed when configureMonitorEvent is called

[Root Cause]
Scrambling status event is not notified when configureMonitorEvent is called
  so test case failed.

[Solution]
Scrambling status event is not notified because of no input data.
Add input setting and check event notified or not after data is input.

Test: Manual
bug: 288193021

Change-Id: If5875d064fd67b72f8299205a5e35b1a2bd61934