Change Default UI to New Display and Add UI Test Suite

[jaisnan]

Description of changes:

1. Change Default Value to the new display.
2. Add test suite for the output formats.
3. Change expected test suite to use old format as a temporary fix.
4. Fix issue that dry-run didn't run well with expected

This is what calling kani on a file looks like by default -

Call-outs:

To get the old output display, pass the flag --output-format old.

The new output display has an issue where --visualize doesn't act well with the --output-format flag. A fix is in the works.

Testing:

• How is this change tested? Added a new test suite

• Is this a refactor change? No

Checklist

• Each commit message has a non-empty body, explaining why the change was made
• Methods or procedures are documented
• Regression or unit tests are included, or existing tests cover the modified code
• My PR is restricted to a single feature or bugfix

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 and MIT licenses.

[celinval]

Sweet! Thanks

[zhassan-aws]

Does it make sense to add --output-format old in compiletest itself to avoid having to modify that many files and updated the line numbers in the "expected" files?

[jaisnan]

Yes, that change makes sense, this is a temporary fix for now.

[tedinski]

Does it make sense to add --output-format old in compiletest itself

This might make it difficult to write tests against other output formats. We'd have to see if multiple --output-format would mean last one wins on my new code, or if it'd just error.