Update to Open Telemetry

[karpikpl]

OpenCensus Python SDK is deprecated, but Microsoft supports it until retirement on September 30, 2024. We now recommend the OpenTelemetry-based Python offering and provide migration guidance.

Can the sample be updated to Open Telemetry?

[pamelafox]

Thanks for filing! I've noted the issue in our repository that generates these templates:

kjaymiller/cookiecutter-relecloud#233