V2 version of basic link between two nodes.

protogeni/test/linktest-v2.rspec

+<?xml version="1.0" encoding="UTF-8"?>
+<rspec xmlns="http://www.protogeni.net/resources/rspec/2"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2
+http://www.protogeni.net/resources/rspec/2/request.xsd"
+       type="request">
+  <node client_id="geni1"
+        exclusive="true">
+    <sliver_type name="raw-pc" />
+    <interface client_id="geni1:if0" />
+  </node>
+  <node client_id="geni2"
+        exclusive="true">
+    <sliver_type name="raw-pc" />
+    <interface client_id="geni2:if0" />
+  </node>
+  <link client_id="link0">
+    <interface_ref client_id="geni1:if0" />
+    <interface_ref client_id="geni2:if0" />
+  </link>
+</rspec>