Tests(tox): Limit `VIRTUALENV_PIP` version for Python 3.4

diff --git a/tox.ini b/tox.ini
index 460460d07604aa9ada9706c009fd6773ccfbf53e..725cae15125fae6311f0381d1ffce9606126cc8e 100644 (file)
--- a/tox.ini
+++ b/tox.ini
@@ -19,6 +19,8 @@ deps =
     -rdevscripts/requirements/requirements_tests.txt
     postgres: psycopg2-binary
 passenv = PGPASSWORD
+setenv =
+    VIRTUALENV_PIP = 19.1.1
 platform = linux
 # Don't fail or warn on uninstalled commands
 whitelist_externals =