Spoliler -> Speedbrake refactoring
Spoliler -> Speedbrake refactoring: KPVs
Fixed TestAirspeedWithSpeedbrakeDeployedMax

This test originally used Spoiler multistate parameter which does not
exist currently.

I've reimplemented the test to use the existing
AirspeedWithSpeedbrakeDeployedMax implementation using Speedbrake
(angle) parameter.
Spoliler -> Speedbrake refactoring: KPV tests
Fix names in test (copy-paste mistake :)
New KPV

GroundspeedFlapChangeDuringTakeoffMax + test