replace SiteDeployment with new non-nested requirements

Change-Id: I151bd07f278d1021481541bdc46fb36fe3713c79
diff --git a/common/cloudlab-openstack.yaml b/common/cloudlab-openstack.yaml
index 969f84c..c50283f 100644
--- a/common/cloudlab-openstack.yaml
+++ b/common/cloudlab-openstack.yaml
@@ -64,11 +64,10 @@
       requirements:
           - deployment:
                node: MyDeployment
-               relationship: tosca.relationships.SiteDeployment
-               requirements:
-                   - controller:
-                       node: CloudLab
-                       relationship: tosca.relationships.UsesController
+               relationship: tosca.relationships.MemberOfDeployment
+          - controller:
+               node: CloudLab
+               relationship: tosca.relationships.UsesController
 
     Public shared IPv4:
       type: tosca.nodes.NetworkTemplate