bump k8s version in travis

Signed-off-by: shubham <[email protected]>

.travis.yml

@@ -36,17 +36,17 @@ before_install:
   - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
   - sudo apt-get update -qq
   - sudo apt-get install --yes -qq gcc
-  - sudo apt-get install --yes -qq libudev-dev
+  - sudo apt-get install --yes -qq libudev-dev conntrack
 
 before_script:
   # Download kubectl and setup minkube for running integration tests
   # Wait for minikube to be up and ready.
   - if [ "$TRAVIS_CPU_ARCH" == "amd64" ]; then
-      curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/v1.13.0/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/ ;
-      curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.35.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/ ;
+      curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/v1.18.0/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/ ;
+      curl -Lo minikube https://storage.googleapis.com/minikube/releases/v1.19.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/ ;
       mkdir -p $HOME/.kube $HOME/.minikube ;
       touch $KUBECONFIG ;
-      sudo minikube start --vm-driver=none --kubernetes-version=v1.13.0 ;
+      sudo minikube start --driver=none --kubernetes-version=v1.18.0 ;
       sudo chown -R travis /home/travis/.minikube/ ;
       JSONPATH='{range .items[*]}{@.metadata.name}:{range @.status.conditions[*]}{@.type}={@.status};{end}{end}'; until kubectl get nodes -o jsonpath="$JSONPATH" 2>&1 | grep -q "Ready=True"; do sleep 1; done ;
     fi