Implementing Virtual Kubelet Extensions Support in Container Group

[ahmed-ebaid]

This PR closes #1063

The changes in this PR are as follows:

• Implementing Virtual Kubelet Extensions Support in Container Group

I have read the contributing guidelines and have completed the following:

• [x] Tested my code end-to-end against a live Azure subscription.
• [x] Updated the documentation in the docs folder for the affected changes.
• [x] Written unit tests against the modified code that I have made.
• [x] Updated the release notes with a new entry for this PR.
• [x] Checked the coding standards outlined in the contributions guide and ensured my code adheres to them.

If I haven't completed any of the tasks above, I include the reasons why here:

Below is a minimal example configuration that includes the new features, which can be used to deploy to Azure:

[ninjarobot]

@ahmed-ebaid do the changes mentioned above make sense? I just want to avoid any breaking changes in the builders, so it's the most important that those follow conventions from the start. The rest of the PR looks good, so can merge once that's adjusted.

Thanks again for the contribution!

[ahmed-ebaid]

@ahmed-ebaid do the changes mentioned above make sense? I just want to avoid any breaking changes in the builders, so it's the most important that those follow conventions from the start. The rest of the PR looks good, so can merge once that's adjusted.

Thanks again for the contribution!

No issues on suggested changes - these were addressed in the new PR - thank you for your review

[ninjarobot]

Thanks @ahmed-ebaid

[ninjarobot]

@martinbryant and/or @isaacabraham would you please be able to cut the 1.7.28 release as I'm out of pocket for the next couple of days.