Support the new association defs interface

An xyz.openbmc_project version of the org.openbmc_project.Associations
interface was just created:
    xyz.openbmc_project.Association.Definitions
        property: Associations

Support this interface as well as the original org.openbmc one.

Change-Id: Idc5a0e5afab51ec96f18a2759446707146b077d1
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/src/test/name_change.cpp b/src/test/name_change.cpp
index f4a9662..a6d18e4 100644
--- a/src/test/name_change.cpp
+++ b/src/test/name_change.cpp
@@ -33,7 +33,7 @@
         {":1.99", DEFAULT_DBUS_SVC}};
     std::string oldOwner = {":1.99"};
     boost::container::flat_set<std::string> assocInterfacesSet = {
-        ASSOCIATIONS_INTERFACE};
+        assocDefsInterface};
 
     // Build up these objects so that an associated interface will match
     // with the associated owner being removed