Refactoring of task response creation

[MartinBasti]

Maintainers will complete the following section

• [x] Commit messages are descriptive enough
• [x] Code coverage from testing does not decrease and new code is covered
• n/a JSON/YAML configuration changes are updated in the relevant schema
• n/a Pull request has a link to an osbs-docs PR for user documentation updates

[MartinBasti]

no release notes needed, just refactoring