[Merged by Bors] - Add OpenLDAP stacks

[fhennig]

Description

Part of: https://github.com/stackabletech/documentation/issues/300

This PR adds two new stacks:

• A tutorial-openldap stack that sets up an OpenLDAP instance with TLS but without an AuthenticationClass
• A openldap stack that also installs the AuthenticationClass so it can easily be installed and reused elsewhere

Review Checklist

• [ ] Code contains useful comments
• [ ] (Integration-)Test cases added (or not applicable)
• [ ] Documentation added (or not applicable)
• [ ] Changelog updated (or not applicable)
• [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

Once the review is done, comment bors r+ (or bors merge) to merge. Further information

[fhennig]

bors merge

[bors[bot]]

Pull request successfully merged into main.

Build succeeded:

• Run Rustfmt