Add partial update support of users

[Nkwenti-Severian-Ndongtsop]

What this PR does / why we need it:

• This PR adds a configurable mechanism to ignore selected user properties during user updates via a new CLI property option: --import.behaviors.user-update-ignored-properties
  Example: --import.behaviors.user-update-ignored-properties=attributes,email

• It keeps the existing behavior working and makes the “ignored properties” list configurable for LDAP-friendly imports.

Which issue this PR fixes fixes #910

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

[Motouom]

It is fine for me

[mbiti2]

@Nkwenti-Severian-Ndongtsop I tested the PR, it works for --import.behaviors.user-update-ignored-properties
But now, after excluding the fields, the user might want to include it in the future, which the --import.behaviors.user-update-ignored-properties-remove was supposed to help with that
But it is not working. Please can you have a look at it?

[Nkwenti-Severian-Ndongtsop]

@Nkwenti-Severian-Ndongtsop I tested the PR, it works for --import.behaviors.user-update-ignored-properties But now, after excluding the fields, the user might want to include it in the future, which the --import.behaviors.user-update-ignored-properties-remove was supposed to help with that But it is not working. Please can you have a look at it?

Thanks @mbiti2, I will have to check the issue with the flag logic

[Motouom]

Please @Nkwenti-Severian-Ndongtsop , @mbiti2 left some comments that must be attended to

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

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

See analysis details on SonarQube Cloud