Result of select bitmap_to_string(bitmap_or(to_bitmap(1), null)) should be 1 instead of null. This PR fix logic of bitmap_or and bitmap_or_count. Other count related funcitons should also be checked and fix, they will be fixed in another PR.
fix sub_bitmap calculate wrong result to return null
1. add dryRun option to list tests 2. group all cases into p0 p1 p2
