[exporter/datadog] incorrect service.name transformation

[sudomateo]

Component(s)

exporter/datadog

What happened?

I wrote up everything in DataDog/opentelemetry-mapping-go#356 since that's where the issue actually lies but Datadog Support requested that I open an issue on this repository instead. I'm going out of office starting tomorrow so I wanted to get this in beforehand. I'll come back and transfer the content over nicely to this issue when I'm back.

Collector version

latest

Environment information

N/A

OpenTelemetry Collector configuration

processors:
  transform:
    log_statements:
      - context: log
        statements:
          - set(attributes["service.name"], "sudomateo")
          - set(attributes["ddtags"], "source:sudomateo")

Log output

N/A

Additional context

N/A

[github-actions]

Pinging code owners:

• exporter/datadog: @mx-psi @dineshg13 @liustanley @songy23 @mackjmr @ankitpatel96

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