Run profiles

[happz]

See comments in tests and CLI option:

cd tests/run/profile/
tmt --root data -vv test export --profile profiles/test/environment.fmf

Pull Request Checklist

• [ ] implement the feature
• [ ] write the documentation
• [ ] extend the test coverage
• [ ] update the specification
• [ ] adjust plugin docstring
• [ ] modify the json schema
• [ ] mention the version
• [ ] include a release note