Log the information about used beakerlib libraries

[seberm]

Print the "calculated" url, ref and path of the used beakerlib libraries which will be cloned by tmt. Print the information in verbose mode of level=3.

Fixes:

• Please print from where tmt is loading beakerlib libraries #3130

$ tmt -r ~/tmt-learning/03-beakertest run --until discover -vvv report --how display
...
/plans/example
summary: Basic smoke test
    discover
        how: fmf
        order: 50
        directory: /home/user/tmt-learning/03-beakertest
        using remote git library:
            url: https://github.com/beakerlib/tuned
            ref: master
            path: /basic
        using remote git library:
            url: https://github.com/beakerlib/openssl
            ref: devel
            path: /certgen
        summary: 1 test selected
            /tests/example
    report
        how: display
        order: 50
        summary: no results found
...

CC: @psss , @yarda

Pull Request Checklist

• implement the feature
• extend the test coverage
• include a release note

[psss]

Thanks for implementing this! Looks good. Added a simple test coverage in 3a76959 and a short mention to release notes in bfe8a77.

[seberm]

Thanks for implementing this! Looks good. Added a simple test coverage in 3a76959 and a short mention to release notes in bfe8a77.

Great, thanks!