dynamic field type(flat_obejct) value missing

[kedbirhan]

dynamic field type(flat_obejct) field are missing from returned query result. For instance requestParameter and responseElement field of cloudtrail logs are commonly mapped to flat_object field type to avoid mapping explosion but when doing so the query result returned completely ignores this field on top of that we can't even use this dynamic nested fields for querying this is a big problem for storing cloud native logs that may have dynamic field values,