Check and report on pod status for deploy success/failure

[zwolf]

The success or failure of a deploy is currently measured by whether the kubectl apply command successfully. This can lead to a situation where the deploy status reads as successful, but the app isn't properly updated in kubernetes. This has happened a couple times as the result of an ImagePullBackOff error, for instance.

It would probably be more useful to check AKS for a new pod in that deployment and check its status instead, so if the apply succeeds but the provisioning fails, there's a red notification.