[BUG] initContainers not considered when calculating a pod's requests

[awprice]

When calculating a pod's requests, we don't seem to consider the initContainers.

There could be a case where the initContainer requests are larger than the regular container requests. In this case, the scheduler will use the initContainer's requests over the regular container requests.

See https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#resources

Resources
Given the ordering and execution for init containers, the following rules for resource usage apply:

• The highest of any particular resource request or limit defined on all init containers is the effective init request/limit
• The Pod's effective request/limit for a resource is the higher of:
  • the sum of all app containers request/limit for a resource
  • the effective init request/limit for a resource
• Scheduling is done based on effective requests/limits, which means init containers can reserve resources for initialization that are not used during the life of the Pod.