Have at least some "service-like" part in the Lambda and COBOL

[GitMensch]

I suggest to pass an "operator id" as part of the Lambda and read it in by the COBOL program (either from an environment variable by ACCEPT operator-id FROM ENVIRONMENT or by a simple ACCEPT operator-id (has to be passed from sysin) - and use this as part of the final DISPLAY to show "service input" and "service output", so far the sample only shows "starts program that always does the same".