Created by: johanbrandhorst
Ensure the Scheme option in the configuration is used.
Fixes #2943 (closed)
PS. I ran ./bin/go-petstore.sh, ./bin/go-petstore-withxml.sh and ./bin/openapi3/go-petstore.sh. I assume the large amount of changes in the openapi3 directory is because it was slightly stale prior to my change.
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