Fix testcases.py formatting
Fix testcases.py formatting

Signed-off-by: Alexey Rokhin <b7a73678d0a3c627413221ecb790443413eba31f@mail.ru>

shin-/compose,thaJeztah/compose,dnephin/compose,dnephin/compose,vdemeester/compose,funkyfuture/docker-compose,thaJeztah/compose,shin-/compose,funkyfuture/docker-compose,vdemeester/compose