Reinstate Reference YAML (Auto Generated)

In operator 2.1, we displayed a complete set of configuration parameters:

https://docs.couchbase.com/operator/2.1/reference-couchbasecluster.html

But in all the higher versions this very helpful sample is missing, which leaves lot of guess work on the user end to come up with right indentations and field strings. Please add the same sample as before in 2.2 and above:

https://docs.couchbase.com/operator/current/resource/couchbasecluster.html