Upgrade dependency botocore to ==1.7.15
Upgrade dependency botocore to ==1.7.15

anush0247/Zappa,mathom/Zappa,anush0247/Zappa,pjz/Zappa,scoates/Zappa,Miserlou/Zappa,Miserlou/Zappa,pjz/Zappa,mathom/Zappa,scoates/Zappa