Specifying custom emulator version in travis config.
Specifying custom emulator version in travis config.

Kolbeinsvik/dhis2-android-sdk,dhis2/dhis2-android-sdk,evestera/dhis2-android-sdk,arthurgwatidzo/dhis2-android-sdk,dhis2/dhis2-android-sdk,dhis2/dhis2-android-sdk