Fixes #6954 - Add additions that allow Foreman tests to pass.

[ehelms]

Foreman allows a plugin to provide a file to be loaded during their
test runs. Here we address:

• Dynflow transaction issues due to using hooks on extended Foreman
  models

[ehelms]

Will require - theforeman/foreman#1849
With the above required change in Foreman, a setup with Foreman and Katello should now be able to run rake test to run all of the Foreman tests and have them pass in the context of Katello.

[ehelms]

[test]

[GregSutcliffe]

[test] now that the Foreman side is merged.

EDIT: dang, page refresh failed to show your test @ehelms. nevermind then :)

[stbenjam]

Just curious to see the failures, the previous test results were purged

[test]

[ehelms]

If you want to see this run, with Foreman core tests, you'll want to run http://ci.theforeman.org/job/test_katello_core_gsutcliffe/ because our current job doesn't run in this context currently.

[ehelms]

As part of this as well, I have been working on making re-usable tasks in the core that plugins can take advantage of as well as run combinations of tests: theforeman/foreman#2571

[unorthodoxgeek]

theforeman/foreman#3056 should make this work 😄

although I really hate this hack. I'd prefer if you found a way for doing this without changing behaviour, as plugins should add behaviour, not change it.

[beav]

@ehelms theforeman/foreman#3056 is merged, mind giving this a rebase?

[beav]

@ehelms is this still needed? I am not sure of the context of this PR

[ehelms]

@beav this is something that would be nice for me to finish, all other plugins run their own tests and all Foreman unit tests combined to verify whether they are breaking core functionality or at least intentionally skipping over it.