case-insensitive import collision

[flyingfang]

hi, i can't build the operator from the source code

cmd/operator/main.go:9:2: case-insensitive import collision: "github.com/AmadeusITGroup/Redis-Operator/vendor/github.com/golang/glog" and "github.com/amadeusitgroup/redis-operator/vendor/github.com/golang/glog"
cmd/operator/main.go:10:2: case-insensitive import collision: "github.com/AmadeusITGroup/Redis-Operator/vendor/github.com/spf13/pflag" and "github.com/amadeusitgroup/redis-operator/vendor/github.com/spf13/pflag"