The chain of executions is as is:
- `docker_build_and_run_tests_all.sh`
- launches several instances of `docker_build_and_run_tests.sh`
- builds docker images with the `target_role.sh` and `tester_role.sh` entrypoints
- inside the tester docker, `tester_role.sh` launches `launch_tests_on_instance.sh`
- the target docker gets tested after setting up accounts, SSH etc.
Previously, these scripts passed options to each other either by a mix of environment
variables and command-line arguments, with some inconsistencies here and there.
Now, `launch_tests_on_instance.sh` supports a lot of command-line options, which can
be specified directly if testing a remote server, or can be passed-through by the calling
script in case of docker tests. `docker_build_and_run_tests.sh` and
`docker_build_and_run_tests_all.sh` also support to passthrough these options down.
We're hitting this bug: https://bugzilla.opensuse.org/show_bug.cgi?id=1146027
Hence the tests randomly fail because of that. The workaround is not really clean
(installing a custom-built package), so we're pulling OpenSUSE Leap 15.0 from our
automated tests workflow. Note that it's still supported, the tests can be launched
manually, and bugs under OpenSUSE Leap 15.0 will still be fixed.
