Michal Nasiadka 241e34748d Upgrade virtualenv in pre
Since virtualenv 20.0 (amongst other changes) six version >1.12.0 is required.
This change adds upgrade of virtualenv and six in pre - to be reverted once
infra CentOS images are sorted out.

Change-Id: I0ca0347bb6ebc5d8f5d22f708211e01221165262
2020-02-12 13:48:25 +01:00
..
2020-02-12 01:20:19 +00:00
2016-01-13 13:47:49 +08:00
2020-01-28 14:03:33 -08:00
2018-11-06 16:43:19 +00:00
2020-01-28 14:03:33 -08:00
2020-01-27 09:09:13 +00:00
2019-11-26 17:30:14 +01:00
2019-12-10 13:19:17 +00:00
2019-10-23 12:58:36 +00:00
2020-02-12 13:48:25 +01:00
2019-07-02 20:44:33 +02:00
2020-02-12 01:20:19 +00:00
2020-01-28 14:03:33 -08:00
2019-11-07 18:03:07 +00:00
2019-08-14 12:32:51 -04:00
2019-12-10 13:19:17 +00:00
2020-01-28 14:03:33 -08:00