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.

Change-Id: I5e41abf9ccf490e6c67d04ca324f90df0c6ca87c
Related-Bug: 1305600
Merge "Add vlan_ids parameter"