Description of problem:
While upgrade SR-IOV operator from 4.4 to 4.5 on OCP 4.5, the InstallPlan failed with:

    Message:               error validating existing CRs agains new CRD's schema: sriovnetworknodestates.sriovnetwork.openshift.io: error validating custom resource against new schema &apiextensions.CustomResourceValidation{OpenAPIV3Schema:(*apiextensions.JSONSchemaProps)(0xc000f7f600)}: [].spec.interfaces.vfGroups.policyName: Required value
    Reason:                InstallComponentFailed


Version-Release number of selected component (if applicable):
OCP 4.5
SR-IOV operator 4.4->4.5


How reproducible:
Happened 1/1.

Steps to Reproduce:
1. Subscribe to rh-verified-operators on Channel 4.4
2. Create SriovNetworkNodePolicy:
cat <<EOF | oc create -f -
---
apiVersion: sriovnetwork.openshift.io/v1
kind: SriovNetworkNodePolicy
metadata:
  name: policy-ens2f1
  namespace: openshift-sriov-network-operator
spec:
  deviceType: vfio-pci
  nicSelector:
    rootDevices:
    - 0000:3b:00.1
    vendor: "8086"
    pfNames:
    - ens2f1
  nodeSelector:
    feature.node.kubernetes.io/network-sriov.capable: "true"
  numVfs: 5
  resourceName: sriov_net
EOF


3. Let the configuration roll out until we get the resource exposed and VFs configured
4. Change the Subscription channel to 4.5

Actual results:
InstallPlan for 4.5 reports the error I mentioned

Expected results:
InstallPlan succeeds and 4.5 is installed.