In a connected and proxy'ed environment, attempting to apply a ClusterGroupUpgrade with a ClusterVersion CR in the policy fails with the error:

InvalidPlatformImage   unable to request update graph on url https://api.openshift.com/api/upgrades_info/v1/graph?channel=stable-4.10: Get "https://api.openshift.com/api/upgrades_info/v1/graph?channel=stable-4.10": dial tcp 54.152.194.165:443: connect: connection timed out

topology-aware-lifecycle-manager.v4.12.5

Always

1. Setup a connected ACM/ZTP environment with a web proxy
2. Create a PGT that contains a ClusterVersion CR such as:

    - fileName: ClusterVersion.yaml
      policyName: "config-policy"
      metadata:
        name: version
        annotations:
          ran.openshift.io/ztp-deploy-wave: "100"
      spec:
        channel: "stable-4.10"
        desiredUpdate:
          version: 4.10.45
      status:
        history:
        - version: 4.10.45
          state: "Completed"

3. Attempt to deploy node via GitOps (or create a CGU to manually apply the policy)

CGU refuses to proceed and apply policies, raising an InvalidPlatformImage error with a timeout to https://api.openshift.com

CGU successfully applies all policies to node

Generally the proxy in the environment does work. rsh in to the cgu controller manager pod and doing a curl against api.openshift.com works fine. Doing an `oc adm upgrade` on the SNO is also successful and the node can pull down the upgrade graphs/etc.

Seems to be erroring out on this line: https://github.com/openshift-kni/cluster-group-upgrades-operator/blob/release-4.12/controllers/precache.go#L77

Pre-caching is not enabled on the CGU though.