Fix use of VmNics in VmDetail such that Nic operations work again
Fix use of VmNics in VmDetail such that Nic operations work again

  PR #573 introduced a change to pass the VM id instead of the VM
  object itself.  `VmNics` is setup to use VM objects and the
  change broke the add and delete actions.  The minimum change
  to get things working was done.

mareklibra/userportal,mareklibra/userportal,mareklibra/userportal,oVirt/ovirt-web-ui,oVirt/ovirt-web-ui,oVirt/ovirt-web-ui,mareklibra/userportal