run-registryd-tests.sh: Kill the python dbusmock at the end
run-registryd-tests.sh: Kill the python dbusmock at the end

Also, don't run pytest in verbose mode - it's enough to let it output
the junit XML.

GNOME/at-spi2-core,GNOME/at-spi2-core,GNOME/at-spi2-core