Istio install steps

deploy/istio-v1alpha3/README.md

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+# Istio
+
+### Install
+
+Download latest release:
+
+```bash
+curl -L https://git.io/getLatestIstio | sh -
+```
+
+Add the istioctl client to your PATH:
+
+```bash
+cd istio-0.7.1
+export PATH=$PWD/bin:$PATH
+```
+
+Install Istio services without enabling mutual TLS authentication:
+
+```bash
+kubectl apply -f install/kubernetes/istio.yaml
+``` 
+
+### Setup automatic sidecar injection
+
+Generate certs:
+
+```bash
+./install/kubernetes/webhook-create-signed-cert.sh \
+    --service istio-sidecar-injector \
+    --namespace istio-system \
+    --secret sidecar-injector-certs
+```
+
+Install the sidecar injection configmap:
+
+```bash
+kubectl apply -f install/kubernetes/istio-sidecar-injector-configmap-release.yaml
+```
+
+Set the caBundle in the webhook install YAML that the Kubernetes api-server uses to invoke the webhook:
+
+```bash
+cat install/kubernetes/istio-sidecar-injector.yaml | \
+     ./install/kubernetes/webhook-patch-ca-bundle.sh > \
+     install/kubernetes/istio-sidecar-injector-with-ca-bundle.yaml
+```
+
+Install the sidecar injector webhook:
+
+```bash
+kubectl apply -f install/kubernetes/istio-sidecar-injector-with-ca-bundle.yaml
+```
+
+Label the default namespace with istio-injection=enabled:
+
+```bash
+kubectl label namespace default istio-injection=enabled
+```