Mark Goddard f1a4b8cafc CI: set previous_release to train
This controls which release we are upgrading from.

Change-Id: I6b56a56e94f0b00b042c693a18ec1685724c7683
Depends-On: https://review.opendev.org/709189
2020-02-21 16:42:42 +00:00
..
2020-02-21 16:42:42 +00:00
2018-03-15 10:47:54 +00:00