Fix NSX host preparation errors with manual installation of the components

I started to install VMware vCloud Director in my new lab, as I want to be ready to test the upcoming Veeam Cloud Connect Replication v10, with its native support for this cloud management platform. One of the requirements of vCloud Director is NSX, so I started with its installation. As I hit some errors in the “NSX Host Preparation” step, I learned how to fix them manually and how to automate a bit VIB deployments.