gke module: disabling node auto provisioning or autoscaling had no effects

[hectorj2f]

The following PR https://github.com/chainguard-dev/mono/pull/28340 disabled autoscaling for our GKE cluster, but that didn't have any effect on the GKE settings. I could still see on dev-eco the node auto-provisioning was enabled.

As a consequence I decided to comment out https://github.com/chainguard-dev/mono/pull/28347 the rest of the node autoprovisiong code but that did NOT have any effect either.

@k4leung4 pointed it out that the plan said there were no changes https://github.com/chainguard-dev/mono/actions/runs/18885466258/job/53899527858?pr=28347. However I could still see these auto provisioning limits when getting the info from GKE gcloud container clusters describe eco --location=us-central1 command:

autoscaling:
  autoprovisioningNodePoolDefaults:
    diskSizeGb: 200
    diskType: pd-ssd
    imageType: COS_CONTAINERD
    oauthScopes:
      - https://www.googleapis.com/auth/userinfo.email
      - https://www.googleapis.com/auth/cloud-platform
    serviceAccount: eco-gke-default@dev-eco-jb8z.iam.gserviceaccount.com
    upgradeSettings:
      strategy: SURGE
  autoscalingProfile: OPTIMIZE_UTILIZATION
  enableNodeAutoprovisioning: true
  resourceLimits:
    - maximum: "2000"
      resourceType: cpu
    - maximum: "8000"
      resourceType: memory

There seems to be an issue on the gke terraform module, our changes to disable node auto provisioning were not applied to the GKE cluster (look at our resource limits). To fix that problem we had to manually change the settings on GKE to disable it.