Fix for multiple env vars in config parameters #15897
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Release notes
[rn:skip]
What does this PR do?
This fixes a bug #15896.
Why is it important/What is the impact to the user?
This PR now allows the user to combine env vars with hard coded strings and env vars in java plugins.
Checklist
I have made corresponding changes to the documentationI have made corresponding change to the default configuration files (and/or docker env variables)Related issues