Signle-line relationship reference in TOSCA Reqirements

[cankarm]

The reference to the relationship TOSCA requirements should be done in single line without "type" word. Currently, the CSAR export includes:

      requirements:
        - host:
            node: AwsPlatform
            relationship:
              type: con_HostedOn_0
            capability: host

The correct way would be:

      requirements:
        - host:
            node: AwsPlatform
            relationship: con_HostedOn_0
            capability: host

The diff is also shown in a figure:

[miwurster]

Fixed in latest master.