update RabbitMQ scaler docs with additional DeliverGetRate, PublishedToDeliveredRatio and ExpectedQueueConsumptionTime trigger modes

[mgs2]

Documentation about RabbitMQ scaler has been updated with information about additional DeliverGetRate, PublishedToDeliveredRatio and ExpectedQueueConsumptionTime trigger modes. Changes have been introduced for upcoming (2.18) version.

Checklist

• Commits are signed with Developer Certificate of Origin (DCO)

Code update: kedacore/keda#6933

[netlify]

✅ Deploy Preview for keda ready!

Name	Link
🔨 Latest commit	9bfeab2
🔍 Latest deploy log	https://app.netlify.com/projects/keda/deploys/68ff630db2503f0008b01bdd
😎 Deploy Preview	https://deploy-preview-1601--keda.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[github-actions]

Thank you for your contribution! 🙏 We will review your PR as soon as possible.

While you are waiting, make sure to:

• Add your contribution to all applicable KEDA versions
• GitHub checks are passing
• Is the DCO check failing? Here is how you can fix DCO issues

Learn more about:

• How to become a listed end-user or a listed commerical offering
• Our contribution guide

[zroubalik]

Please omit the 2.17 version, this change will be present on >= 2.18 if merged

[mgs2]

Please omit the 2.17 version, this change will be present on >= 2.18 if merged

Done.

[mgs2]

Related to PR kedacore/keda#6933 - code for new RabbitMQ scaler modes itself has been merged and shipped with 2.18 release, but docs retain content from 2.17.

Any chance to review this PR (+ request an update if necessary) and merge it, to keep RabbitMQ scaler docs up to date?

[JorTurFer]

Sorry because I missed this. The feature is already merged as part of v2.18, could you rebase this PR and update also the file in v2.19? (the change has to be in both files)

[mgs2]

Sorry because I missed this. The feature is already merged as part of v2.18, could you rebase this PR and update also the file in v2.19? (the change has to be in both files)

Done. Please, take a look. Any feedback on the content itself is more than welcome!