fix Role Permissions of Method UnregisterApplication & Add Parameter to CertificateStoreIdentifier OpenStore Method

[romanett]

Proposed changes

Fix allowed Roles of Method Unregister Application allow Application Self Admin Privilge: https://reference.opcfoundation.org/GDS/v105/docs/6.6.8

Add Parameter NoPrivateKeys to OpenStoreMethod of CertificateStoreIdentifier

Related Issues

• Fixes #

Types of changes

• [x] Bugfix (non-breaking change which fixes an issue)
• [x] Enhancement (non-breaking change which adds functionality)
• [ ] Test enhancement (non-breaking change to increase test coverage)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected, requires version increase of Nuget packages)
• [ ] Documentation Update (if none of the other choices apply)

Checklist

• [x] I have read the CONTRIBUTING doc.
• [x] I have signed the CLA.
• [x] I ran tests locally with my changes, all passed.
• [ ] I fixed all failing tests in the CI pipelines.
• [ ] I fixed all introduced issues with CodeQL and LGTM.
• [ ] I have added tests that prove my fix is effective or that my feature works and increased code coverage.
• [ ] I have added necessary documentation (if appropriate).
• [ ] Any dependent changes have been merged and published in downstream modules.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 53.53%. Comparing base (3f29a72) to head (5865efa).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2558 +/- ## ========================================== - Coverage 54.55% 53.53% -1.02% ========================================== Files 335 335 Lines 64749 64750 +1 Branches 13292 13292 ========================================== - Hits 35325 34666 -659 - Misses 25594 26271 +677 + Partials 3830 3813 -17 ```

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