Description of the problem:

When configuring vSphere credentials using the OpenShift console UI on a fresh environment, the generated Infrastructure object populates the correct datacenter and datastore fields but the template path retains the literal placeholder datacenterplaceholder instead of the actual datacenter value.{}

Steps to reproduce:

1. Install new 4.20.4 openshift cluster using assisted-installer 

2. In the Openshift Console - use the credentials vsphere UI plugin to set the vpshere credentials 

3. look at the `infrastructures.config.openshift.io cluster`

Actual results:

datacenter: DEVQEdatacenter-2
datastore: /DEVQEdatacenter-2/datastore/vsanDatastore
template: /datacenterplaceholder/vm/test-infra-cluster-d7-jzsct-rhcos-assisted-generated-failure-domain 

Expected results:

datacenter: DEVQEdatacenter-2
datastore: /DEVQEdatacenter-2/datastore/vsanDatastore
template: /DEVQEdatacenter-2/vm/test-infra-cluster-d7-jzsct-rhcos-assisted-generated-failure-domain