plugin enumeration BUGFIX store LYB value

The test is disabled because the new code in the
lyplg_type_store_enum() is still not used due to lyb_parse_subtree_r().
diff --git a/tests/utests/CMakeLists.txt b/tests/utests/CMakeLists.txt
index 0b91121..8a506d5 100644
--- a/tests/utests/CMakeLists.txt
+++ b/tests/utests/CMakeLists.txt
@@ -20,6 +20,7 @@
 ly_add_utest(NAME binary SOURCES types/binary.c)
 ly_add_utest(NAME inet_types   SOURCES types/inet_types.c)
 ly_add_utest(NAME yang_types   SOURCES types/yang_types.c)
+ly_add_utest(NAME enumeration  SOURCES types/enumeration.c)
 
 ly_add_utest(NAME range  SOURCES restriction/test_range.c)
 ly_add_utest(NAME pattern  SOURCES restriction/test_pattern.c)