The E2E tests in min_max_filters.test do not exercise the code paths in min-max-filter.cc

The E2E tests in min_max_filters.test do not exercise the code paths in min-max-filter.cc. This could be verified by commenting out the return statement at https://github.com/apache/impala/blob/master/be/src/util/min-max-filter.cc#L684, and then run the corresponding E2E tests defined in min_max_filters.test.

$IMPALA_HOME/bin/impala-py.test tests/query_test/test_runtime_filters.py::TestMinMaxFilters::test_min_max_filters

After commenting out that return statement in min-max-filter.cc, we expect to hit a DCHECK at https://github.com/apache/impala/blob/master/be/src/util/min-max-filter.cc#L698. But according to my observation we are not able to hit that DCHECK, implying that the test query at https://github.com/apache/impala/blob/master/testdata/workloads/functional-query/queries/QueryTest/min_max_filters.test#L48-L50 does not trigger the code paths within https://github.com/apache/impala/blob/master/be/src/util/min-max-filter.cc#L655-L699.

We hence need to improve these E2E tests so that the respective code paths are exercised.