Grant Young authored May 08, 2024 and Mitchell Nielsen committed May 08, 2024

Update CNH RA examples to follow [latest guidance for Webservice and NGinx pods](gitlab-org/gitlab!149878 "Adjust Reference Architecture Cloud Native Webservice and NGinx guidance") along with some general cleanup.

Main changes seen worth noting:

* 2k, 3k
  * `prometheus` map removed entirely
    * Monitoring is a more specific option for our customers. The Prometheus chart has some limitations and Dedicated and GET both separately deploy the Prometheus Operator as a result but other customers may choose to deploy their own monitoring solution as desired.
  * NGINX set to DaemonSet and placed on `webservice` workloads per nodeSelector
  * Webservice memory limit increased from 5.25G to 7G
* 5k
  * same changes from 2k, 3k
  * Webservice maxReplicas 10 -\> 9
* 10k, 25k
  * same changes from 2k, 3k
* 50k
  * same changes from 2k, 3k
  * Webservice maxReplicas 80 -\> 77
  * Webservice minReplicas 60 -\> 58

Related to gitlab-org/quality/reference-architectures#292

Related to gitlab-org/quality/reference-architectures#300