Hosted control planes fails with proxy configuration in RHOCP 4

Issue

• HCP installation failing when a proxy is configured.

• When adding a proxy configuration in the HostedCluster manifest the ingress controller of the new managed cluster is in a degraded state, as you can see below.

  HostedCluster manifest :

  apiVersion: hypershift.openshift.io/v1beta1
  kind: HostedCluster
  metadata:
  creationTimestamp: null
  name: cluster-hcp
  namespace: clusters
  spec:
  configuration:
  proxy:
    httpProxy: http://proxy.testlab.local:80
    httpsProxy: http://proxy.testlab.local:80
    noProxy: testlab.local,192.168.0.0/16
  

  Cluster operators status :

  NAME                                       VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE   MESSAGE
  console
  csi-snapshot-controller                    4.15.16   True        False         False      57m
  dns                                        4.15.16   False       True          True       123m    DNS "default" is unavailable.
  image-registry                                       False       True          True       123m    NodeCADaemonAvailable: The daemon set node-ca has available replicas...
  ingress                                              False       True          True       123m    The "default" ingress controller reports Available=False: IngressControllerUnavailable: One or more status conditions indicate unavailable: DeploymentAvailable=False (DeploymentUnavailable: The deployment has Available status condition set to False (reason: MinimumReplicasUnavailable) with message: Deployment does not have minimum availability.)
  insights
  kube-apiserver                             4.15.16   True        False         False      123m
  kube-controller-manager                    4.15.16   True        False         False      123m
  kube-scheduler                             4.15.16   True        False         False      123m
  kube-storage-version-migrator
  monitoring
  network                                    4.15.16   True        True          False      107m    DaemonSet "/openshift-multus/network-metrics-daemon" is waiting for other operators to become ready...
  node-tuning                                4.15.16   True        True          False      112m    Waiting for 2/2 Profiles to be applied
  openshift-apiserver                        4.15.16   True        False         False      123m
  openshift-controller-manager               4.15.16   True        False         False      123m
  openshift-samples
  operator-lifecycle-manager                 4.15.16   True        False         False      123m
  operator-lifecycle-manager-catalog         4.15.16   True        False         False      123m
  operator-lifecycle-manager-packageserver   4.15.16   True        False         False      123m
  service-ca
  storage                                    4.15.16   True        False         False      123m