Cleaned up LKE Cluster Create endpoint

[Dorthu]

The CLI didn't like how the spec was formatted initially, and I'm pretty
sure it was wrong. This works with the linked CLI PR, but please verify
it looks good in the docs - I'm happy to work with someone to get this
into a mergable state.

[leslitagordita]

• Thanks for this update, @Dorthu . node_pools is certainly a list of objects. That was an error on my part.
• I originally had node_pools as a property directly in the POST /lke/clusters request body, and not in the LKEClusterRequestBody. Ifnode_pools is in the LKEClusterRequestBody then node_pools is also displayed in the response for other endpoints:
  • POST /lke/clusters
  • GET /lke/clusters
  • GET /lke/clusters/{clusterId}
  • PUT /lke/clusters/{clusterId}
• If you think it is more correct to have all properties in a component schema object, I can create a third schema object for all LKE cluster's common properties and convert LKECluster to LKEClusterResponse OR
• Move node_pools back to POST /lke/clusters request body, but of course keep your update to its datatype.
• OR is there a third thing I'm completely not considering?

[Dorthu]

Let me move it back to where it was originally and see if the CLI will still use it - that's probably the right place for it.

[Dorthu]

@leslitagordita fixed the placement of node_pools - cli still likes it.