It has been observed that the stx-openstack helm charts build started to
fail since the `stable/ussuri` branch was removed from the upstream
project `openstack/heat`.
In order to be able to build the helm charts again, we must change the
`PROJECT_REF` value to use a commit hash in place of the branch name.
This change proposes the use of the following commit SHA:
Repository Former stable/ussuri branch and ussuri-eol tag's
HEAD (as of May 9th)
* openstack/heat 5466ede853bde7d636943cba017ed8265dcfd260
Test Plan:
PASS - Build stx-debian base image
PASS - Build wheels tarball
PASS - Build stx-heat image
Partial-Bug: 2019015
Change-Id: I785d704c68ca6d987f30a57c5068677eef1e77f2
Signed-off-by: Luan Nunes Utimura <LuanNunes.Utimura@windriver.com>