python3-dbusmock: upgrade 0.24.0 -> 0.24.1

Do not register standard D-Bus service directories (Thanks Benjamin Berg)
templates: Add IIO Sensors Proxy support (Thanks Marco Trevisan)
Fix importlib module import (Thanks Marco Trevisan)
Clean up code for most recent pylint version

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>