Fixed the routing issue when trying to clone a VM from a non-explorer layout

Routing error seen - "Error caught: [ActionController::RoutingError] No route matches {:controller=>"miq_request", :action=>"miq_request/prov_edit", :src_vm_id=>10000000000100, :org_controller=>"vm", :vdi_users=>nil}"

The action specified for page rendering was changed from "miq_request/prov_edit" to simply "prov_edit" since it was throwing off the ActionController and causing a routing error