Android: Set ANDROID_HOME environment variable

Task-number: QTCREATORBUG-9424

Change-Id: Iba4a9663a8fa39160f1953366ae4aa64d5f586ea
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Version bump

Change-Id: Ibf982c6aac6b0d097d4ec764399197af7a2fe03a