Add support for realm normalization

[thomasdarimont]

This is a squash of the commits from multiple repositories:
Original PR by sonOfRa: #818
Adaptations by thomasdarimont: https://github.com/thomasdarimont/keycloak-config-cli/tree/feature/realm-normalization

Fixes #799

Co-authored-by: Simon Levermann simon.levermann@codecentric.de
Signed-off-by: Thomas Darimont thomas.darimont@googlemail.comWhat this PR does / why we need it:

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

PR Readiness Checklist:

Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[sonarqubecloud]

Quality Gate passed

Issues
20 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.6% Duplication on New Code

See analysis details on SonarQube Cloud

[AssahBismarkabah]

Hi @thomasdarimont,

Thanks for implementing the realm normalization feature. 💯 The local tests passed, and the output looks good. However, the GitHub workflow is failing due to unmet code coverage checks from the JaCoCo plugin.

Could you please take a look at this? Alternatively, we can proceed by adding more test cases or exclude them directly

[thomasdarimont]

Thanks @AssahBismarkabah ! I just updated this PR with changes from your branch.

[AssahBismarkabah]

Hi @thomasdarimont , thanks :)
they appear to be some test failures still, I will take a second look into it.

Errors: 
[ERROR]   ChecksumServiceCasesIT$DefaultChecksumKeyIT.hasToBeUpdated_with_multiple_files:127->ChecksumServiceCasesIT$AbstractChecksumServiceIT.importAndVerifyChecksum:85->AbstractImportTest.doImport:69->AbstractImportTest.doImport:76 » NullPointer Cannot invoke "java.util.Map.get(Object)" because "customAttributes" is null
``

[AssahBismarkabah]

Hi @thomasdarimont, I just reran the workflow, and it seems to be successful. I don't know specifically what changed!

[sonarqubecloud]

Quality Gate passed

Issues
74 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.6% Duplication on New Code

See analysis details on SonarQube Cloud

[thomasdarimont]

LGTM

[AssahBismarkabah]

LGTM

@@thomasdarimont, could you please approve the pull request?