TestCRDFieldPresenceInUnstructured does not detect list fields

[jasonvigil]

Checklist

• I did not find a related open issue.
• I did not find a solution in the troubleshooting guide: (https://cloud.google.com/config-connector/docs/troubleshooting)
• If this issue is time-sensitive, I have submitted a corresponding issue with GCP support.

Bug Description

List fields are incorrectly reported by the test as not set, for all resources.

Additional Diagnostic Information

For example, in #3544 (comment) we noticed the error

[missing_field] crd=apigeeenvgroups.apigee.cnrm.cloud.google.com version=v1beta1: field ".spec.hostnames[]" is not set in unstructured objects

This should not fail, because the field is set in the test fixture here

Kubernetes Cluster Version

n/a

Config Connector Version

n/a

Config Connector Mode

cluster mode

Log Output

No response

Steps to reproduce the issue

Run the test in #3435

YAML snippets

[jingyih]

I believe that line needs to be manually deleted.

[Camila-B]

It seems like it's an issue with [] being added to the list field infieldPath (ex. .spec.hostnames[]). When it tries to search for the field here, it's unable to find it since the field name doesn't originally have [] at the end.

k8s-config-connector/tests/apichecks/crds_test.go

Line 471 in 2f5ddd3

if hasField(obj.Object, fieldPath) {

[jingyih]

Oh I misunderstood earlier. This looks like a bug in the test.

/cc the test author @acpana