(query):add lower, upper, ltrim, and rtrim test case

tests/develop-test/fulltest-query.sh

@@ -9,3 +9,7 @@ python3 ./test.py -f 2-query/escape.py
 python3 ./test.py -f 2-query/func_compare.py
 python3 ./test.py -f 2-query/diff_ignore_negative.py
 python3 ./test.py -f 2-query/diff_funcs.py
+python3 ./test.py -f 2-query/lower_func.py
+python3 ./test.py -f 2-query/uppper_func.py
+python3 ./test.py -f 2-query/ltrim_func.py
+python3 ./test.py -f 2-query/rtrim_func.py