[PATCH] tests/unit_tests: fix self.__name__ error

[lijuan.tu at intel.com]

On Wed, 22 Jun 2022 10:24:02 +0800, Daxue Gao <daxuex.gao at intel.com> wrote:
> fix tests/unit_tests: self.__name__ is attribute does not exist.
> 
> Signed-off-by: Daxue Gao <daxuex.gao at intel.com>


Backported to 22.03, thanks