[FEATURE REQUEST] Update cloud OS images to the latest

[przemyslavic]

Is your feature request related to a problem? Please describe.
Update Ubuntu 20.04-LTS/RHEL 7/CentOS 7 images used in the cloud to the latest version before releasing v1.3.0.

Describe the solution you'd like
Update Azure DevOps pipelines, documentation and epicli defaults.

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DoD checklist

• Changelog updated
• COMPONENTS.md updated / doesn't need to be updated
• Schema updated / doesn't need to be updated
• Feature has automated tests
• Automated tests passed (QA pipelines)
  • apply
  • upgrade
• Idempotency tested
• Documentation added / updated / doesn't need to be updated
• All conversations in PR resolved
• Solution meets requirements and is done according to design doc
• Usage compliant with license
• Backport tasks created / doesn't need to be backported

[przemyslavic]

Ubuntu: PR #2843
RHEL/CentOS: PR #2855

[przemyslavic]

✔️ Latest images tested for Ubuntu, RHEL and CentOS.