Openshift 4 on vSphere: error setting up new vSphere SOAP client: certificate signed by unknown authority.

Issue

• While trying to install Openshift 4 on vCenter, there is an issue with the certificate used for vSphere:

ERROR Error: error setting up new vSphere SOAP client: Post https://test.com/sdk: x509: certificate signed by unknown authority
ERROR
ERROR on ../../../../../tmp/openshift-install-814159700/main.tf line 1, in provider "vsphere":
ERROR 1: provider "vsphere" {
ERROR
ERROR
ERROR Failed to read tfstate: open /tmp/openshift-install-814159700/terraform.tfstate: no such file or directory
FATAL failed to fetch Cluster: failed to generate asset "Cluster": failed to create cluster: failed to apply using Terraform