Android: Ensure that keytool returns english output

Task-number: QTCREATORBUG-9941
Change-Id: I69c3f6aecdf5e4c40934b5151518a0787b752356
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>