CI cluster requirements

The resources required for the Kubernetes cluster depend on the number of builds running in parallel, as well as the resources required for each build.

The following table provides a rough estimation of the resources required, based on the number of daily builds:

PRs per day	Nodes with 4 CPU, 8GB RAM, 100GB disk	Nodes with 8 CPU, 16GB RAM, 200GB disk
100	19 - 26	11 - 15
500	87 - 121	45 - 62
1000	172 - 239	89 - 123