v2.0.5

change interface when defining additional routes in vm_extensions:

• before:

  - name: my-ext
    cloud_properties:
      routes:
        my-network-name:
        - 10.0.0.08/8

• after:

  - name: my-ext
    cloud_properties:
      routes:
        my-network-name:
        - cidr: 10.0.0.08/8
          gateway: 192.168.0.2 # specify gw manually
        - cidr: 192.168.0.0/24
          # gw deduced from my-network-name