Dmitry Tantsur abf7d3fcb3 Add basic upgrade jobs
The CI scripts install Bifrost on old stable, test it, then
do the same on master.

Change-Id: I300828d54af78ef4843094ff231652adc4566aa0
2021-01-19 16:19:03 +01:00
..
2021-01-19 16:19:03 +01:00
2021-01-19 16:19:03 +01:00