Bump minikube and kubernetes version

Makefile

@@ -489,7 +489,7 @@ else
 	curl -Lo operator-sdk https://github.com/operator-framework/operator-sdk/releases/download/v$(OPERATOR_SDK_VERSION)/operator-sdk-v$(OPERATOR_SDK_VERSION)-x86_64-linux-gnu && chmod +x operator-sdk && sudo mv operator-sdk /usr/local/bin/
 	mkdir -p $(HOME)/.kube $(HOME)/.minikube
 	touch $(KUBECONFIG)
-	sudo minikube start --vm-driver=none --kubernetes-version=$(MINIKUBE_KUBERNETES_VERSION)
+	sudo minikube start --vm-driver="" --kubernetes-version=$(MINIKUBE_KUBERNETES_VERSION)
 	sudo chown -R travis: /home/travis/.minikube/
 endif
 
@@ -512,4 +512,4 @@ helm-deploy: helm-package
 generate-docs: ## Re-generate docs directory from the website directory
 	@echo "+ $@"
 	rm -rf docs || echo "Cannot remove docs dir, ignoring"
-	hugo -s website -d ../docs
+	hugo -s website -d ../docs

config.minikube.env

@@ -1,10 +1,10 @@
 KUBERNETES_PROVIDER=minikube
 
-MINIKUBE_KUBERNETES_VERSION=v1.16.0
+MINIKUBE_KUBERNETES_VERSION=v1.17.4
 MINIKUBE_DRIVER=virtualbox
-MINIKUBE_VERSION=1.4.0
+MINIKUBE_VERSION=1.9.1
 KUBECTL_CONTEXT=minikube
 
 JENKINS_API_HOSTNAME_COMMAND=minikube ip
 JENKINS_API_PORT=0
-JENKINS_API_USE_NODEPORT=true
+JENKINS_API_USE_NODEPORT=true