VOM: Additions to allow uses to UT applications that use VOM

- find object by key
- compare objects

Change-Id: I36ec8612be9482bcef7ceced2a59f7403f77b3e8
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
diff --git a/src/vpp-api/vom/arp_proxy_binding.hpp b/src/vpp-api/vom/arp_proxy_binding.hpp
index 2ee814a..f57f697 100644
--- a/src/vpp-api/vom/arp_proxy_binding.hpp
+++ b/src/vpp-api/vom/arp_proxy_binding.hpp
@@ -116,7 +116,7 @@
   /**
    * It's the singular_db class that calls replay()
    */
-  friend class singular_db<interface::key_type, arp_proxy_binding>;
+  friend class singular_db<interface::key_t, arp_proxy_binding>;
 
   /**
    * Sweep/reap the object if still stale
@@ -149,7 +149,7 @@
   /**
    * A map of all ArpProxy bindings keyed against the interface.
    */
-  static singular_db<interface::key_type, arp_proxy_binding> m_db;
+  static singular_db<interface::key_t, arp_proxy_binding> m_db;
 };
 };