lrdpv2: kill the process after QTF timeout.

            kill the qtf server forcefully after completion of qtf parsing. Here if QTF processed successfuly
            within timeout value then QTF sever will be closed gracefuly, but if it is not completed then forcefuly
            we have to kill the qtfserver and all child processes

Change-Id: Ifac67357568eb2b5b4f73159176c257fcdafa9a6