[v32] GenericApplication: use empty string for setupScript default
BEGINRELEASENOTES
*Workflow
FIX: Fix for GenericApplication when no setup script is set, fixes ILCDIRAC-971
ENDRELEASENOTES
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BEGINRELEASENOTES
*Workflow
FIX: Fix for GenericApplication when no setup script is set, fixes ILCDIRAC-971
ENDRELEASENOTES