Fix wrong tag for mendersoftware/gui image (test -> latest)
Fix wrong tag for mendersoftware/gui image (test -> latest)

Signed-off-by: Maciej Mrowiec <0c5b7bd73e5de492f16f5039ef275802502d5ce2@gmail.com>

pasinskim/integration,GregorioDiStefano/integration,pasinskim/integration,pasinskim/integration,GregorioDiStefano/integration