Description of problem:
Following the doc method to adjust cluster-wide migration policies:
https://docs.openshift.com/container-platform/4.11/virt/live_migration/virt-live-migration-limits.html

oc edit hco -n openshift-cnv kubevirt-hyperconverged

It is not possible to add:
allowAutoConverge: "true"
or
allowPostCopy: "true"

I can adjust existing params and/or add a bandwidthPerMigration value, but when I add either of the "allow" options it just saves and they disappear.

Version-Release number of selected component (if applicable):
OCP 4.11.7
Virt 4.11.1-91

How reproducible:
Each time

Steps to Reproduce:
1. oc edit hco -n openshift-cnv kubevirt-hyperconverged
Default values:
liveMigrationConfig:
completionTimeoutPerGiB: 800
parallelMigrationsPerCluster: 5
parallelOutboundMigrationsPerNode: 2
progressTimeout: 150
2. Add to this section and save:
allowAutoConverge: "true"
3. oc edit again, that param is gone

Actual results:
Changes are removed.

Expected results:
Users can set cluster-wide policies that are not in the default list.

Additional info:
The cluster-wide policy cannot be set for those params, however setting a migration policy for a group of VMs does work properly, ex:

apiVersion: migrations.kubevirt.io/v1alpha1
kind: MigrationPolicy
metadata:
name: my-awesome-policy
spec:

1. Migration Configuration
   allowAutoConverge: true
   completionTimeoutPerGiB: 900
   allowPostCopy: false
2. Matching to VMIs
   selectors:
   virtualMachineInstanceSelector:
   matchLabels:
   app: db

Once the VMI migrated it shows those values are used as expected:
migrationConfiguration:
allowAutoConverge: true
allowPostCopy: false
bandwidthPerMigration: "0"
completionTimeoutPerGiB: 900