travis-ci push tagged builds to google play prod
travis-ci push tagged builds to google play prod

-closes #2861

Hunter522/qgroundcontrol,ethz-asl/qgc_asl,Hunter522/qgroundcontrol,Hunter522/qgroundcontrol,mihadyuk/qgroundcontrol,catch-twenty-two/qgroundcontrol,catch-twenty-two/qgroundcontrol,mihadyuk/qgroundcontrol,CornerOfSkyline/qgroundcontrol,CornerOfSkyline/qgroundcontrol,RedoXyde/PX4_qGCS,RedoXyde/PX4_qGCS,kd0aij/qgroundcontrol,ethz-asl/qgc_asl,ethz-asl/qgc_asl,ethz-asl/qgc_asl,Hunter522/qgroundcontrol,Hunter522/qgroundcontrol,CornerOfSkyline/qgroundcontrol,kd0aij/qgroundcontrol,Hunter522/qgroundcontrol,catch-twenty-two/qgroundcontrol,kd0aij/qgroundcontrol,RedoXyde/PX4_qGCS,catch-twenty-two/qgroundcontrol,RedoXyde/PX4_qGCS,kd0aij/qgroundcontrol,RedoXyde/PX4_qGCS,CornerOfSkyline/qgroundcontrol,mihadyuk/qgroundcontrol,mihadyuk/qgroundcontrol,kd0aij/qgroundcontrol,CornerOfSkyline/qgroundcontrol,catch-twenty-two/qgroundcontrol,catch-twenty-two/qgroundcontrol,CornerOfSkyline/qgroundcontrol,ethz-asl/qgc_asl,RedoXyde/PX4_qGCS,kd0aij/qgroundcontrol,mihadyuk/qgroundcontrol,mihadyuk/qgroundcontrol