Update cuttlefish tag

rebar.config

@@ -9,7 +9,7 @@
      {ekka, "v0.5.1"},
      {clique, "develop"},
      {esockd, "v5.4.2"},
-     {cuttlefish, "v2.1.1"}
+     {cuttlefish, "v2.2.0"}
     ]}.
 
 {edoc_opts, [{preprocess, true}]}.