Harmonize tox and virtualenv versions

- Set all tox versions to 2.9.1
- Set all virtualenv version to 16.2.0

Signed-off-by: Ulysses Souza <ulysses.souza@docker.com>

Dockerfile

@@ -19,7 +19,7 @@ WORKDIR /code/
 
 # FIXME(chris-crone): virtualenv 16.3.0 breaks build, force 16.2.0 until fixed
 RUN pip install virtualenv==16.2.0
-RUN pip install tox==2.1.1
+RUN pip install tox==2.9.1
 
 ADD requirements.txt /code/
 ADD requirements-dev.txt /code/

appveyor.yml

@@ -4,7 +4,7 @@ version: '{branch}-{build}'
 install:
   - "SET PATH=C:\\Python37-x64;C:\\Python37-x64\\Scripts;%PATH%"
   - "python --version"
-  - "pip install tox==2.9.1 virtualenv==15.1.0"
+  - "pip install tox==2.9.1 virtualenv==16.2.0"
 
 # Build the binary after tests
 build: false

script/build/windows.ps1

@@ -16,7 +16,7 @@
 #
 # 4. In Powershell, run the following commands:
 #
-#        $ pip install 'virtualenv>=15.1.0'
+#        $ pip install 'virtualenv==16.2.0'
 #        $ Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
 #
 # 5. Clone the repository:

script/setup/osx

@@ -36,7 +36,7 @@ if ! [ -x "$(command -v python3)" ]; then
   brew install python3
 fi
 if ! [ -x "$(command -v virtualenv)" ]; then
-  pip install virtualenv
+  pip install virtualenv==16.2.0
 fi
 
 #