1、The virtualLink requirement of tosca.nodes.nfv.CP defined below:
     - virtualLink:
         capability: tosca.capabilities.VirtualLinkable
   But the tosca.capabilities.VirtualLinkable does not exsit in simple
   tosca(which is tosca.capabilities.Linkable), it should be
   tosca.capabilities.nfv.VirtualLinkable in nfv tosca.
   Additonally, the attribute definition of IP_address in CP is not
   needed because the parent node type tosca.nodes.network.Port
   also includes the same attributes ip_address.
 2、The bug will be submitted to openstack community.
JIRA:PARSER-32
Change-Id: I8f70747675dd6623380493d0436d9516c545d705
Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>
       required: false
   requirements:
     - virtualLink:
-        capability: tosca.capabilities.VirtualLinkable
+        capability: tosca.capabilities.nfv.VirtualLinkable
         relationship: tosca.relationships.nfv.VirtualLinksTo
         node: tosca.nodes.nfv.VL
     - virtualBinding:
         capability: tosca.capabilities.nfv.VirtualBindable
         relationship: tosca.relationships.nfv.VirtualBindsTo
         node: tosca.nodes.nfv.VDU
-  attributes:
-    IP_address:
-      type: string
-      required: false
 
 tosca.nodes.nfv.VL:
   derived_from: tosca.nodes.network.Network