Fix minikube version

Author: LEDfan

.travis.yml

@@ -27,7 +27,7 @@ before_script:
 # Download kubectl, which is a requirement for using minikube.
 - curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/v1.18.9/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/
 # Download minikube.
-- curl -Lo minikube https://storage.googleapis.com/minikube/releases/v1.8.9/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
+- curl -Lo minikube https://storage.googleapis.com/minikube/releases/v1.14.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
 - mkdir -p $HOME/.kube $HOME/.minikube
 - touch $KUBECONFIG
 - sudo minikube start --profile=minikube --vm-driver=none --kubernetes-version=v1.18.9