`kpt fn run` scoping broken

[frankfarzan]

$ kpt pkg get git@github.com:GoogleContainerTools/kpt-functions-sdk.git/example-configs example-configs
$ cd example-configs

This works:

kpt fn source . |         
kpt fn run --image gcr.io/kpt-functions/label-namespace -- label_name=color label_value=orange |
kpt fn sink .  

This doesn't:

$ cat << EOF > kpt-func.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: my-config
  annotations:
    config.k8s.io/function: |
      container:
        image:  gcr.io/kpt-functions/label-namespace
    config.kubernetes.io/local-config: "true"
data:
  label_name: color
  label_value: orange
EOF
$ kpt fn source .

Removing scoping rules, will run the function:

kpt fn run --global-scope .

[frankfarzan]

Root cause is that code is using strings.HasPrefix(resourceDir, dir) to do subdirectory match.

[frankfarzan]

Fix: kubernetes-sigs/kustomize#2165