[META] Update tutorials to show Elastic Agent instead of Beats

[dedemorton]

Description

All the tutorials in the Observability Guide show how to use Beats (Filebeat and Metricbeat) for monitoring. However now that Elastic Agent is GA, we need to update the tutorials. We also have cloud-native ways to send data (like the Elastic Serverless Forwarder) that we might want to cover in the tutorials.

Tutorials that require updates:

• [x] https://www.elastic.co/guide/en/observability/current/monitor-aws.html PR is up here: https://github.com/elastic/observability-docs/pull/2106
• [x] https://www.elastic.co/guide/en/observability/current/monitor-azure.html https://github.com/elastic/observability-docs/pull/2174
• [ ] #2972
• [ ] #2973
• [ ] #2974

Related issues:

• [x] https://github.com/elastic/observability-docs/issues/2251
• [ ] https://github.com/elastic/observability-docs/issues/2252

Collaboration

• The docs team will lead producing the content

Contact Person:

TBD - varies by tutorial

Suggested Target Release

8.4+

[dedemorton]

Met with Miguel to discuss K8s monitoring. The K8s tutorial will need to be rewritten, not just updated with Agent steps.