Back to v1.9.0, something wrong with cadvisor

.travis.yml

@@ -30,10 +30,10 @@ before_script:
     # Make /sys mounted as rshared to support cadvisor
   - sudo mount --make-rshared /sys
     # # Download kubectl, which is a requirement for using minikube.
-  - curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/v1.10.0/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/
+  - curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/v1.9.0/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/
     # # Download minikube.
   - curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
-  - sudo minikube start --vm-driver=none --bootstrapper=localkube --kubernetes-version=v1.10.0
+  - sudo minikube start --vm-driver=none --bootstrapper=localkube --kubernetes-version=v1.9.0
     # # Fix the kubectl context, as it's often stale.
   - minikube update-context
     # # Wait for Kubernetes to be up and ready.