Enable e2e tests on travis

.travis.yml

@@ -1,9 +1,15 @@
 language: go
-sudo: false
+sudo: required
 
 env:
   global:
     - GO111MODULE=on
+    - CHANGE_MINIKUBE_NONE_USER=true
+    - MINIKUBE_WANTUPDATENOTIFICATION=false
+    - MINIKUBE_WANTREPORTERRORPROMPT=false
+    - MINIKUBE_HOME=$HOME
+    - CHANGE_MINIKUBE_NONE_USER=true
+    - KUBECONFIG=$HOME/.kube/config
 
 go:
 - 1.12.x
@@ -18,8 +24,20 @@ before_install:
 - go get -u github.com/golang/lint/golint
 - make go-dependencies
 
+before_script:
+# Download kubectl, which is a requirement for using minikube.
+- curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/v1.12.9/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/
+# Download minikube.
+- curl -Lo minikube https://storage.googleapis.com/minikube/releases/v1.2.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
+- mkdir -p $HOME/.kube $HOME/.minikube
+- touch $KUBECONFIG
+- sudo minikube start --vm-driver=none --kubernetes-version=v1.12.9
+- "sudo chown -R travis: /home/travis/.minikube/"
+
 script:
+- kubectl cluster-info
 - make verify
+- make build e2e
 
 cache:
   directories: