.travis.yml: Add QT_QPA_PLATFORM=minimal before test case
.travis.yml: Add QT_QPA_PLATFORM=minimal before test case

benlau/androidnative.pri,benlau/quickandroid,benlau/androidnative.pri,benlau/androidnative.pri,benlau/quickandroid,benlau/quickandroid,benlau/quickandroid