fail to create install-config.yaml as apiVIP and ingressVIP are not in machine networks

Create install-config file for vsphere IPI against 4.12.0-0.nightly-2022-09-02-194931, fail as apiVIP and ingressVIP are not in machine CIDR.

$ ./openshift-install create install-config --dir ipi                
? Platform vsphere
? vCenter xxxxxxxx
? Username xxxxxxxx
? Password [? for help] ********************
INFO Connecting to xxxxxxxx
INFO Defaulting to only available datacenter: SDDC-Datacenter 
INFO Defaulting to only available cluster: Cluster-1 
INFO Defaulting to only available datastore: WorkloadDatastore 
? Network qe-segment
? Virtual IP Address for API 172.31.248.137
? Virtual IP Address for Ingress 172.31.248.141
? Base Domain qe.devcluster.openshift.com 
? Cluster Name jimavmc       
? Pull Secret [? for help] ****************************************************************************************************************************************************************************************
FATAL failed to fetch Install Config: failed to generate asset "Install Config": invalid install config: [platform.vsphere.apiVIPs: Invalid value: "172.31.248.137": IP expected to be in one of the machine networks: 10.0.0.0/16, platform.vsphere.ingressVIPs: Invalid value: "172.31.248.141": IP expected to be in one of the machine networks: 10.0.0.0/16] 

As user could not define cidr for machineNetwork when creating install-config file interactively, it will use default value 10.0.0.0/16, so fail to create install-config when inputting apiVIP and ingressVIP outside of default machinenNetwork.

Error is thrown from https://github.com/openshift/installer/blob/master/pkg/types/validation/installconfig.go#L655-L666, seems new function introduced from PR https://github.com/openshift/installer/pull/5798

The issue should also impact Nutanix platform.
 

4.12.0-0.nightly-2022-09-02-194931

Always

1. create install-config.yaml file by running command "./openshift-install create install-config --dir ipi"
2. failed with above error
3.

fail to create install-config.yaml file

succeed to create install-config.yaml file