Add support for DataDog as Evaluation Provider

[thisthat]

Goal

Support Datadog as KeptnEvaluationProvider.

Technical Details

In Keptn v1, we have integration for different observability providers. In particular, we have a Datadog integration.
There should be also such support in the Keptn Lifecycle Toolkit.
For this, the following is required:

• Add an entry in the provider selector (code)
• Introduce a new datadog.go file in the providers folder that contains the integration logic
• Add unit tests
• Update the KLT Docs

Reference

The Prometheus and Dynatrace integrations can be used as a reference.
Go Client for DD

[thisthat]

@vadasambar you might be interested in this :)

[vadasambar]

@vadasambar you might be interested in this :)

Thank you for the mention @thisthat. I don't know the complete context but this sounds interesting.

[shardulsrivastava]

@thisthat I would like to work on this.

[thisthat]

Thanks @shardulsrivastava 👍

[sudiptob2]

Hi, @thisthat
I am interested in this issue. As there hasn't been any activity from shardulsrivastava for a long time, could you please re-assign it to me?

[thisthat]

Hey @sudiptob2 thanks for stepping in 🚀

[agardnerIT]

@thisthat This thread is being used as an implementation reference by others to create metrics providers. Therefore, although it is closed, please consider updating the links in the first post as they're all now dead.

All links 404.

@sudiptob2 Would you consider presenting what you've learned on a community call? A LOT of people would benefit from your knowledge and learnings. The docs team can also take that content to get a proper docs page started so hopefully with one call, we can:

1. Have a reference video and screenshare
2. Get a proper docs page started for this activity