Keda manager installs Keda with overcommited resources

[kwiatekus]

Description

Default Keda CR defines overcommited resource requests for keda workloads

apiVersion: operator.kyma-project.io/v1alpha1
kind: Keda
metadata:
  name: default
spec:
  resources:
    operator:
      requests:
        cpu: "300m"
        memory: "150Mi"
    metricServer:
      requests:
        cpu: "300m"
        memory: "500Mi"

Those should be reduced, as keda documents that 100m is enough for production-grade installation

Additionally we should also reduce resources for keda admission webhook.

Reasons

Conservation of cluster compute resources