vSphere "Folder not found" during Openshift 4 IPI installation

Issue

If the objects in vSphere are organized within folders, like in either of these schemes:

* Vcenter
  \_ Folder
    \_ Datacenter
      \_ Cluster
       ...

or

* Vcenter
  \_ Datacenter
    \_ Folder
      \_ Cluster
       ...

Instead of the usual one:

* Vcenter
  \_ Datacenter
    \_ Cluster
     ...

Then errors like this:

INFO Creating infrastructure resources...         
ERROR                                              
ERROR Error: failed to find provided vSphere objects: folder '/DATACENTER/vm/xxxxxx-lfgv8' not found 
ERROR                                              
ERROR   on ../../../tmp/openshift-install-222423625/main.tf line 43, in resource "vsphereprivate_import_ova" "import": 
ERROR   43: resource "vsphereprivate_import_ova" "import" { 
ERROR                                              
ERROR                                              
FATAL failed to fetch Cluster: failed to generate asset "Cluster": failed to create cluster: failed to apply Terraform: failed to complete the change 

or this:

FATAL failed to fetch Cluster: failed to fetch dependency of "Cluster": failed to generate asset "Platform Provisioning Check": platform.vsphere.folder: Invalid value: "/DATACENTER/vm/Openshift": folder '/DATACENTER/vm/Openshift' not found

may appear during the "cluster creation" phase.