Fix #145: Add missing configuration for Max allowed resources.
requested to merge derrix/gitlab-runner:#145-kubernetes-executor-not-assigning-resources into master
This configuration is necessary for the evaluateMaxResourceOverwrite
from the executors/kubernetes/overwites.go: https://gitlab.com/gitlab-org/gitlab-runner/-/blob/master/executors/kubernetes/overwrites.go#L182.
Without setting the maximum allowed for each of the resources, setting allowed overrides is disabled.
Reopenning !225 (closed)