Placement policy is not working if specified after scaling policy in VNFD template

[Niraj Singh]

If user configure scaling policy and placement policy at the same time in VNFD template under policies by keeping placement policy below the scaling policy, placement policy will not work.
Example:
  policies:
    - SP1:
        type: tosca.policies.tacker.Scaling
        properties:
          increment: 2
          cooldown: 120
          min_instances: 0
          max_instances: 2
          default_instances: 0
        targets: [VDU1]
    - my_compute_placement_policy:
        type: tosca.policies.tacker.Placement
        properties:
          policy: anti-affinity
          strict: true
        description: Apply anti-affinity placement policy to the application servers
        targets: [VDU1]

Because after scaling policy handle_properties() got executed, it removes VDU resources from the self.hot_resource.
and when call goes to ToscaPolicies->handle_properties in heat-translator, there are no VDU resource available.
And it is not updating the VDU resource properties with scheduler_hints.