Upgrade to dep 0.4.1

.travis.yml

@@ -13,7 +13,7 @@ before_install:
   - sudo apt-get update
   - sudo apt-get -y install docker-ce
   - curl https://glide.sh/get | sh
-  - sudo curl -Lo /usr/local/bin/dep https://github.com/golang/dep/releases/download/v0.3.2/dep-linux-amd64
+  - sudo curl -Lo /usr/local/bin/dep https://github.com/golang/dep/releases/download/v0.4.1/dep-linux-amd64
   - sudo chmod +x /usr/local/bin/dep
 
 install:

test/docker/Gopkg.toml

@@ -17,4 +17,8 @@
   version = "^1.12"
 
 [[constraint]]
-  name = "github.com/docker/go-connections"
+  name = "github.com/docker/go-connections"
+
+[prune]
+  unused-packages = true
+  go-tests = true

test/kubernetes/Gopkg.toml

@@ -27,3 +27,7 @@
 [[constraint]]
   name = "k8s.io/apimachinery"
   branch = "release-1.7"
+
+[prune]
+  unused-packages = true
+  go-tests = true