Description of problem:
In ocp 4.x the wildcard routes are creating like ".apps.<clustername>.<basedomain>. when we tried to change this like only to use basedomain .<basedomain>.com in the default ingresscontroller domain its not able to resolve it's creating a new wildcard in the private zone.
> when adding the second"ingress controller with only the basedoamin, This creates a second deployment of the routers, creates a loadbalancer on AWS and tries to create the DNS records on Route53. This works for the public zone (which is automatically set to ".<basedoamin>"), but fails with the internal, private zone because this is set to "clustername.basdoamin".
> now the requirement is all the application should use the subdomain only my domainname not with <clustername>.<domainname>
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install OCP 4.1 Cluster on AWS with openshift-installer
2. After installation `oc edit ingress.config.opneshift.io/cluster`
3. Change spec.domain and remove apps.<clustername>. from it.
its not resolving
it should work as per the change