Few object-store parameters set the format int64 and minimum to 0. Latest changes in the format handling result in u32 params in the generated code. Change the login to default at u32 when format is not specified, but u64 when int64 with min is specified. Additionally improve mentioned object-store schemas. Change-Id: I99f70526f2015beefe43950330b27c564688a69f Signed-off-by: Artem Goncharov <artem.goncharov@gmail.com>