CI: Fix tox 4 once again

Change-Id: I4d2f521b36ee4684a331e725787bfb56434d1d44
(cherry picked from commit a313ed4)

Author: mnasiadka

tox.ini

@@ -12,9 +12,9 @@ allowlist_externals = find
 deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/wallaby}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
-          OS_STDOUT_CAPTURE OS_STDERR_CAPTURE OS_LOG_CAPTURE OS_TEST_TIMEOUT
-          PYTHON OS_TEST_PATH LISTOPT IDOPTION
+passenv = http_proxy,HTTP_PROXY,https_proxy,HTTPS_PROXY,no_proxy,NO_PROXY
+          OS_STDOUT_CAPTURE,OS_STDERR_CAPTURE,OS_LOG_CAPTURE,OS_TEST_TIMEOUT
+          PYTHON,OS_TEST_PATH,LISTOPT,IDOPTION
 commands =
   find . -type f -name "*.py[c|o]" -delete -o -type l -name "*.py[c|o]" -delete
   find . -type d -name "__pycache__" -delete