Add python telemetry hopper to land telemetry data in Azure Monitor

[aditjha-msft]

This PR introduces the Python telemetry hopper which will be used in the container scenario to forward telemetry from image customizer to Azure Monitor. This approach is needed for a variety of reasons, most importantly because Azure Monitor doesn't provide a Go SDK for instrumentation, and other solutions come with security and auth challenges. See design doc here: Image Customizer OTel Integration.docx
This will work alongside PR: #241

if --disable-telemetry is passed in to the docker command, the telemetry hopper will not be started and collection and export will be disabled:

Telemetry collection in the container will only be enabled if explicitly provided the ENABLE_TELEMETRY environment variable. Otherwise telemetry is disabled by default.

 docker run \
   --rm \
   --privileged=true \
   -v /dev:/dev \
   -v "$HOME/staging:/mnt/staging:z" \
   mcr.microsoft.com/azurelinux/imagecustomizer:0.13.0 \
   imagecustomizer \
     --disable-telemetry
     --image-file "/mnt/staging/image.vhdx" \
     --config-file "/mnt/staging/image-config.yaml" \
     --build-dir "/build" \
     --output-image-format "vhdx" \
     --output-image-file "/mnt/staging/out/image.vhdx"

Checklist

• Tests added/updated
• Documentation updated (if needed)
• Code conforms to style guidelines

[romoh]

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