concretize variables in correlate map

[martind260]

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name: Pull request about: Contribute your changes to the project title: '[pull-request]' labels: '' assignees: ''

Description Problem: the correlateMessage-Payload was equipped with a complex object that couldnt be evaluated in a bpmn process. This fix dissolves the object into primitive variables.

Reference Issues #XXX

Checklist

• [ ] Acceptance criteria are met
• [x] Pipeline has been run successfully
• [ ] JUnit tests have been run successfully
• [ ] Changelog is adjusted
• [ ] Documentations are completed
• [ ] Frontend is tested
• [ ] Created sub-branches are deleted
• [ ] Boards are updated ( Digitalisierung , Support , Zenhub )
• [ ] feature process is created or extended
• [ ] git-ops is customized
• [ ] Openshift environments are prepared (Secrets, etc.)