Changes to attach the system vm iso when booting the virtual router - part 1.
Copy the iso to the secondary storage and let the hypervisor agent know of its
location during setup. The agent will copy it over once it handles the setup
command.
Changes for attaching the systemvm iso to virtual router will booting it -
part 2. The agent copies over the systemvm iso during setup. When a
virtual router is being booted it attaches the iso to it.