pip3 install python-keystoneclient==3.15.*
pip3 install six==1.11.*
pip3 install peewee==3.8.*
-pip3 install pyyaml==3.*
+pip3 install pyyaml>=5.1.2
pip3 install prometheus_client==0.4.*
pip3 install gnocchiclient==7.0.*
pip3 install pyvcloud==19.1.1