The branch was just created [1].
[1] https://github.com/openstack/requirements/tree/stable/ussuri
Change-Id: Ib5d6a773f3ba20eaa1d54febbafae8b7bd1cde94
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
 FROM golang:1.13-alpine3.11
 
 ARG BRANCH=stable/kali
-ARG OPENSTACK_TAG=master
+ARG OPENSTACK_TAG=stable/ussuri
 ARG OPNFV_TAG=stable/kali
 
 RUN apk --no-cache add --update python3 bash git grep libffi openssl mailcap && \
 
 usedevelop = True
 deps =
   -chttps://git.opnfv.org/functest/plain/upper-constraints.txt
-  -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
+  -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/ussuri/upper-constraints.txt}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt
 install_command = pip install {opts} {packages}