Noticed in e.g. https://openqa.fedoraproject.org/tests/58798
we're doing this wrong, `boot_decrypt` was moved into utils as
a function, but we were still calling it as a method...
Summary:
This requires us to handle decryption each time we reboot in
the upgrade process, so factor that little block out into the
base class so we don't have to keep pasting it. It's also a
bit tricky to integrate into the 'catch a boot loop' code we
have to deal with #1349721, but I think this should work. There
is a matching openqa_fedora_tools diff to generate the disk
image.
Test Plan:
Run the tests, check that they work, run the other
upgrade and encrypted install tests and check they still work
properly too.
Reviewers: garretraziel
Reviewed By: garretraziel
Subscribers: tflink
Differential Revision: https://phab.qadevel.cloud.fedoraproject.org/D922
