Update kubectl to version 1.7.1
Update kubectl to version 1.7.1

nikolasd/scoop,yunspace/scoop,lukesampson/scoop,Cyianor/scoop,reelsense/scoop,kodybrown/scoop,coonce/scoop,toxeus/scoop,Congee/scoop,rasa/scoop,vidarkongsli/scoop,berwyn/scoop