Add vlan_ids parameter

  'vlan_ids' parameter was added to l23network puppet module. Added
  this parameter in nailgun accordingly.
  Created NeutronNetworkDeploymentSerializer60 for adding 'vlans_id'
  to the network scheme attributes.

Closes-Bug: 1305600

Change-Id: I5c1b68191c8b875f8f0ec52010f9e6cadf1f8700