[16881] [14179] Secure DS test suite

[Mario-DL]

Description

This PR makes the already exisitng Discovery Server tests to run with security if -DSECURITY=ON compilation flag is added.

Contributor Checklist

• Commit messages follow the project guidelines.
• The added tests pass locally.
• Changes are backwards compatible.
• New feature has been documented/Current behavior is correctly described in the documentation.
• Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• Check CI results: changes do not issue any warning.
• Check CI results: failing tests are unrelated with the changes.