added mock to requirements
added mock to requirements

funkyfuture/docker-py,aanand/docker-py,MohamedAshiqrh/docker-py,Faylixe/docker-py,ibuildthecloud/docker-py,rastaman/docker-py,shakamunyi/docker-py,minzhang28/docker-py,bfirsh/docker-py,docker/docker-py,minzhang28/docker-py,shishir-a412ed/docker-py,dimaspivak/docker-py,auready/docker-py,mrfuxi/docker-py,jhowardmsft/docker-py,tangkun75/docker-py,ColinHuang/docker-py,paulbellamy/docker-py,TomasTomecek/docker-py,PierreF/docker-py,Ye-Yong-Chi/docker-py,aanand/docker-py,vpetersson/docker-py,rutsky/docker-py,ticosax/docker-py,delfick/docker-py,runcom/docker-py,funkyfuture/docker-py,youhong316/docker-py,mark-adams/docker-py,ssanderson/docker-py,vitalyisaev2/docker-py,dnephin/docker-py,uggla/docker-py,Melraidin/docker-py,rschmidtz/docker-py,mangalaman93/docker-py,bboreham/docker-py,rhatdan/docker-py,kpavel/docker-py,zwqzhangweiqiang/docker-py,Faylixe/docker-py,leolujuyi/docker-py,olsaki/docker-py,schu/docker-py,erikced/docker-py,vdemeester/docker-py,tristan0x/docker-py,wallrj/docker-py,mikedougherty/docker-py,wlan0/docker-py,gamechanger/docker-py,dimaspivak/docker-py,ColinHuang/docker-py,ClusterHQ/docker-py,v-boyko/docker-py,rutsky/docker-py,shakamunyi/docker-py,a-ba/docker-py,vdemeester/docker-py,kaiyou/docker-py,stevenewey/docker-py,ibuildthecloud/docker-py,kaiyou/docker-py,jpopelka/docker-py,a-ba/docker-py,rancher/docker-py,tbeadle/docker-py,docker/docker-py,wehkamp/docker-py,dlorenc/docker-py,hibooboo2/docker-py,clarete/docker-py,sourcelair/docker-py,uian/docker-py,mohitsoni/docker-py,aiden0z/docker-py,youhong316/docker-py,vpetersson/docker-py,auready/docker-py,aiden0z/docker-py,terminalmage/docker-py,bfirsh/docker-py,mnowster/docker-py,tshauck/docker-py,jamesmarva/docker-py