Updating Build-tools package Revision# for 29.0.2 release - expected to go out with QT Beta6 Bug: 137956425 Test: N/A am: 2f9cf082f9 am: 4e8e5fccd6
am: e385bf2327

Change-Id: I57463f9fe66c04b8be32b0c3592bbdd12347fb9f