Update workshop with new cloud-agentless onboarding

[manuelbcd]

• [x] Prerequisites: Update onboarding screenshots https://sysdig.awsworkshop.io/0-prerequisites/2-sysdig_account.html
• [x] Install: Change onboarding description (get rid of cloudtrail details and describe new solution) https://sysdig.awsworkshop.io/1-install.html
• [x] Install: Change Terraform-based instructions and screenshots https://sysdig.awsworkshop.io/1-install/1-terraform.html (don't forget clean-up section also)
• [x] Install: Change CFT-based instructions and screenshots https://sysdig.awsworkshop.io/1-install/2-cloudformation.html (don't forget clean-up section also)
• [x] Threat Detection: Change explanation removing CloudTrail references https://sysdig.awsworkshop.io/4-threat-detection.html
• [x] Threat Detection: Rename "CloudTrail" section and rewrite explanation https://sysdig.awsworkshop.io/4-threat-detection/1-cloud_threat_detection.html
• [x] Threat Detection: Reassess cloud event detection scenario which is based on cloudtrail (details, screenshots, etc). https://sysdig.awsworkshop.io/4-threat-detection/1-cloud_threat_detection/52_detecting_runtime_cloud_security_threats.html
• [x] Dig deeper Threat Detection: Rewrite details and change diagram. https://sysdig.awsworkshop.io/4-threat-detection/9-digdeeper.html

[manuelbcd]

Branch created: #35 Update agentless cloud

[manuelbcd]

done! closed