* [skip ci] disable ubuntu && update case
Signed-off-by: Nzw <zw@milvus.io>

* some cases set level-1 from level-2
Signed-off-by: Nzw <zw@milvus.io>

* add get collection info case: after index created
Signed-off-by: Nzw <zw@milvus.io>

* add -1 in invalid ints
Signed-off-by: Nzw <zw@milvus.io>

* remove douban pip during install python-lib
Signed-off-by: Nzw <zw@milvus.io>
Co-authored-by: Nzw <zw@milvus.io>