Use SKIP_TABLE_REGEXP instead

Co-authored-by: Kentaro Hayashi <kenhys@gmail.com>

Author: Watson1978

test/plugin/test_in_sql.rb

@@ -86,7 +86,7 @@ def test_all_tables
     begin
       table_names = d.instance.instance_variable_get(:@tables).map(&:table)
       assert { table_names.include?("messages") }
-      assert { !table_names.include?("schema_migrations") }
+      assert { table_names.none? { |table_name| table_name.match?(Fluent::Plugin::SQLInput::SKIP_TABLE_REGEXP) }}
     ensure
       d.instance.shutdown
     end