Pin tox to version lower than 4

This branch is based on zed where tox version is lower than 4

Change-Id: Icde38d0d9bb12b23e80cf58cd504d6338feb5d0c

1 files changed, 2 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index b8f6e343a..363ef8918 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,9 @@
 [tox]
 minversion = 3.18.0
-skipsdist = True
 envlist = py3,pep8
 ignore_basepython_conflict=true
+requires =
+  tox<4
 
 [testenv]
 usedevelop = True