Are starting clean install? or are you keeping the existing vcenter database? If you are not planning to keep any of the old server vcenter, then you can just a build a new server with all services installed, make sure you spec your VM accordingly, recreate your clusters, discount esxi hosts from old vcenter and connect to new vcenter.
If you want to keep existing database, reinstall vcenter and keep existing database + VMware KB: Re-pointing and re-registering VMware vCenter Server 5.1 / 5.5 and components There is little point in copy over the ssl certificates if they are self-signed.