Fix user-reported bugs on /docs/guides/crosswalk/aws/eks/

[isaac-pulumi]

Problem

This page has a high blended score (2045) for traffic, bounce rate, and negative feedback.

Users report "cluster.provider" and "cluster.kubeconfig" don't work as expected in this guide. Also, the example app is not consistent with the GKE example in /docs/tutorials/kubernetes/gke/ (not clear why we chose to use different examples or why one is a 'tutorial' and one is a 'guide').

Proposed Solution

• [ ] Test for "cluster.provider and cluster.kubeconfig don't work"
• [ ] Adapt Guestbook app example from /docs/tutorials/kubernetes/gke/

[susanev]

@isaac-pulumi @cnunciato are these still issues today?

[cnunciato]

As we update this doc, it'd be good to pull its examples into programs using make new-example-program and the example-program shortcode. ✨