engine: Create a resource kind+name specific stateful store

This adds a meta state store that is preserved between graph switches if
the kind and name match. This is useful so that rapid graph changes
don't necessarily reset their retry count if they've only changed one
resource field.

engine/resources/resources_test.go

@@ -1749,3 +1749,20 @@ func TestResources2(t *testing.T) {
 		})
 	}
 }
+
+func TestResPtrUID1(t *testing.T) {
+	t1, err := engine.NewNamedResource("test", "test1")
+	if err != nil {
+		t.Errorf("could not build resource: %+v", err)
+		return
+	}
+	t2, err := engine.NewNamedResource("test", "test1")
+	if err != nil {
+		t.Errorf("could not build resource: %+v", err)
+		return
+	}
+
+	if uid1, uid2 := engine.PtrUID(t1), engine.PtrUID(t2); uid1 != uid2 {
+		t.Errorf("uid's don't match")
+	}
+}