Switch vmware_fusion provider to puppetlabs/ubuntu-14.04-64-puppet

The puphpet image somehow had a broken puppet install. :P
Since Puppet Labs has an official vagrant box for Trusty,
let's just use that.

This fixes provisioning after enabling 'timedmediahandler' role
on a freshly created vmware_fusion-provider-using mw-vagrant.

Change-Id: Ib582ac9b69472fb727e86944c276730aeb9f40da
Merge "Switch vmware_fusion provider to puppetlabs/ubuntu-14.04-64-puppet"