Bump requests dependency in requirements.txt (CVE-2018-18074)
Bump requests dependency in requirements.txt (CVE-2018-18074)

Signed-off-by: Joffrey F <2e95f49799afcec0080c0aeb8813776d949e0768@docker.com>

funkyfuture/docker-py,funkyfuture/docker-py,docker/docker-py,vdemeester/docker-py,docker/docker-py,youhong316/docker-py,vdemeester/docker-py,youhong316/docker-py