Update virtualenv to 20.0.17#1108

pyup-bot wants to merge 1 commit intomasterkragniz/python-etcd3:masterfrom

pyup-update-virtualenv-20.0.13-to-20.0.17kragniz/python-etcd3:pyup-update-virtualenv-20.0.13-to-20.0.17Copy head branch name to clipboard