Add environment support to the discover step

[psss]

Combine L1 and L2 environment in Test.export().
Include a simple test with an environment variable.
Extend utils.format() to support dictionaries as well.

[psss]

Any test with environment variable set still fails because of problem mentioned in #99.

[pvalena]

LGTM.

[pvalena]

/test

[psss]

@pvalena, thanks for the review. @thrix, I had to disable the new test because of missing environment support in cruncher. Seems we will be running into similar issues more and more often. Would be nice to replace cruncher with tmt (relatively) soon.

[thrix]

LGTM

[pvalena]

Seems we will be running into similar issues more and more often. Would be nice to replace cruncher with tmt (relatively) soon.

@psss for my information, what's blocking that (from tmt side)?

[psss]

/packit test

[psss]

@psss for my information, what's blocking that (from tmt side)?

Would be good to improve the output/logging/results presentation. But I think the main point is just the priority. The cruncher is somewhat stable and changing that would require extra time and effort. We just need to prioritize this well.

[psss]

/packit test

[psss]

All tests passed, just the results are not updated here. Let's give it one more attempt.

[psss]

/packit build

[lachmanfrantisek]

/packit test

[psss]

All tests passed. There is a problem with Packit results reporting. Merging.