Fixing yml syntax to fix the build

Change-Id: I2f6be1b9f05e3d6d8fa7b4e263c4a5fa1215bd21
Reviewed-on: http://reviews.cloudfoundry.org/13643
Tested-by: CI Master <cf-ci@rbcon.com>
Reviewed-by: Chun Yu <yuc@rbcon.com>