Fix not to cache all views if white_memqcache_table_list is empty and black_memqcache_table_list isn't empty.
Fix not to cache all views if white_memqcache_table_list is empty and black_memqcache_table_list isn't empty.

treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres