Add Refchecker to Tests

[Mab879]

Description:

• Fix utils/refchecker.py
• Add utils/refchecker.py checks for RHEL7 and RHEL8 CIS profiles

Rationale:

• Make utils/refchecker.py useful
• Help find bugs sooner

Review Hints:

• Remove the CIS keys from a file like linux_os/guide/system/software/integrity/crypto/configure_crypto_policy/rule.yml, and it should make the tests fail.

[github-actions]

Start a new ephemeral environment with changes proposed in this pull request:

Fedora Environment

Oracle Linux 8 Environment

[jan-cerny]

I have run some of the tests on the RHEL 8 content and when I intentionally removed some CIS references from rules the test started to fail as is expected.

[Mab879]

/packit build

[marcusburghardt]

@jan-cerny , I saw you already reviewed this PR once. Are you comfortable to assign it to yourself?

[jan-cerny]

Sorry for the delay.

The quiet mode isn't good because if the references break and the tests start to fail people can't see which rules fail the test. Don't use the quiet mode or make the errors visible also in quiet mode.

Also please resolve the conflicts.

[codeclimate]

Code Climate has analyzed commit 9994c38 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 48.8% (0.0% change).

View more on Code Climate.

[jan-cerny]

I have run the tests locally and if I break something they start to fail as expected. Also, I have seen that they run in GitHub Actions.