[tripleo] stable/wallaby gate blocker for centos-8 standalone - please hold recheck

Hi folks fyi there is a wallaby gate blocker at https://bugs.launchpad.net/tripleo/+bug/1976247 Seems like ansible-role-python_venv_build is trying to install master upper constraints and that is causing a conflict for oslo-db===11.3.0 (comfing via stackviz installation) we are trying to find a workaround but please hold recheck until we do grateful for any pointers or suggestions here or on the launchpad o/ thanks, marios