as a vsphere user, i would like to use the customisationspec feature of vsphere from foreman
that means applying a user_data template and have it applied when deploying a vmware vm from template
changes need to be done at the following level
-rbvmomi to pass additional options

-foreman to handle user_data and pass it to setComputePowerUp in app/models/concerns/orchestration/compute.rb
note rbvmomi will need some slight modifications as the current code doesnt make use of all the customspec options. Still, no modifications is currently required there nor at fog