commit 81f3860251a9cda01a5aee3baf40713e16d80c0e
Author: Jonathan Rosser <jonathan.rosser@rd.bbc.co.uk>
Date:   Thu Oct 8 17:12:24 2020 +0100

    Pin virtualenv<20 for python2 functional tests
    
    The functional tests break [1] wth versions of virtualenv 20 or greater
    so pin the version on stable branches so that tests keep working.
    
    [1] http://paste.openstack.org/show/798877/
    
    Change-Id: Ie9c677933364afc9b3ea1821ee9f0d70589c5683

diff --git a/run_tests_common.sh b/run_tests_common.sh
index 6080ada..a5fe42b 100755
--- a/run_tests_common.sh
+++ b/run_tests_common.sh
@@ -82,7 +82,7 @@ if ! which pip &>/dev/null; then
 fi
 
 # Install bindep and tox
-sudo pip install 'bindep>=2.4.0' tox
+sudo pip install 'bindep>=2.4.0' tox 'virtualenv<20'
 
 if [[ "${ID,,}" == "fedora" ]]; then
     sudo dnf -y install redhat-lsb-core yum-utils