Update docker-compose from 1.16.1 to 1.17.1 (#305)

Author: pyup.io bot

requirements-dev.txt

@@ -5,7 +5,7 @@ aiohttp==2.2.5
 aiomysql==0.0.9
 aiopg==0.13.1
 coverage==4.4.2
-docker-compose==1.16.1
+docker-compose==1.17.1
 docker-py==1.10.6
 flake8==3.4.1
 ipdb==0.10.3