[docs] Quickstart troubleshooting

[faermanj]

/kind bug

What steps did you take and what happened:
The quickstart doesn't seem to reach a ready cluster with the current instructions.

What did you expect to happen:
Workload cluster provisioned and ready

Anything else you would like to add:
In the provisioned instance, it seems it's trying to access API on localhost
E1120 17:50:20.816379 1861 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
Perhaps it's something I missed

Of course i might have done something wrong, Is that a known error?
In any case, I believe a review of the quickstart (and dev guide) would help to make it more resilient.

[k8s-ci-robot]

This issue is currently awaiting triage.

If CAPA/CAPI contributors determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[faermanj]

Reviewing to summarize action points on next meeting:
https://gist.github.com/faermanj/9e8f8ea06757da257abc86f814482cd3