Add auto tests to check a properties
Add auto tests to check a properties

... such as baudRate, dataBits, parity, stopBits, and flowControl.

(cherry-picked from db27ac4672a0aa28abec2a301758ee14c385f350)
Change-Id: Ife5c2993e0c0302d06ef5f51a9fdc53f87f95896
Reviewed-by: Denis Shienkov <6a9c747bd2ba446682324cf340d3b86f30cf4d55@gmail.com>

RoadWorksSoftware/QtSerialPort-OS2,RoadWorksSoftware/QtSerialPort-OS2