Fix Kubernetes docs for zipkin options and namespaces

* added namespace, because it was removed from manifest

* increased amount of memory for minikube

* Removed zipkin from deployment and added kubectl apply to override core deployments

Author: jasonrichardsmith

deployment/kubernetes-minikube.md

@@ -22,7 +22,7 @@ cd microservices-demo
 You can start Minikube by running:
 
 ```
-minikube start --memory 4096
+minikube start --memory 8192
 ```
 
 Check if it's running with `minikube status`, and make sure the Kubernetes dashboard is running on http://192.168.99.100:30000.
@@ -64,6 +64,11 @@ Deploy the Sock Shop application on Minikube
 kubectl create -f deploy/kubernetes/manifests/sock-shop-ns.yaml -f deploy/kubernetes/manifests
 ```
 
+To start Opentracing run the following command after deploying the sock shop
+```
+kubectl apply -f deploy/kubernetes/manifests-zipkin/zipkin-ns.yaml -f deploy/kubernetes/manifests-zipkin
+```
+
 Wait for all the Sock Shop services to start:
 
 ```

deployment/kubernetes-start.md

@@ -20,5 +20,6 @@ This explains how to deploy the Sock Shop onto any existing Kubernetes cluster.
 1. [Clone the microservices-demo repository](https://github.com/microservices-demo/microservices-demo)
 2. Go to the *deploy/kubernetes* folder
     ```
+    kubectl create namespace sock-shop
     kubectl apply -f complete-demo.yaml
-    ```
+    ```

deployment/kubernetes.md

@@ -141,10 +141,18 @@ You may optionally choose to configure Weave Flux which allows automatic deploym
 <!-- deploy-doc-start create-infrastructure -->
 
     master_ip=$(terraform output -json | jq -r '.master_address.value')
-    ssh -i ~/.ssh/deploy-docs-k8s.pem ubuntu@$master_ip KUBECONFIG=\$HOME/admin.conf kubectl apply -f /tmp/manifests/sock-shop-ns.yaml -f /tmp/manifests/zipkin-ns.yaml -f /tmp/manifests
+    ssh -i ~/.ssh/deploy-docs-k8s.pem ubuntu@$master_ip KUBECONFIG=\$HOME/admin.conf kubectl apply -f /tmp/manifests/sock-shop-ns.yaml -f /tmp/manifests
 
 <!-- deploy-doc-end -->
 
+### Deploy Sock Shop with Opentracing (optional)
+To deploy with opentracing run after deploying the sock-shop
+
+```
+    master_ip=$(terraform output -json | jq -r '.master_address.value')
+    ssh -i ~/.ssh/deploy-docs-k8s.pem ubuntu@$master_ip KUBECONFIG=\$HOME/admin.conf kubectl apply -f /tmp/manifests-zipkin/zipkin-ns.yaml -f /tmp/manifests-zipkin
+```
+
 ### Service autoscaling (optional)
 If you want all stateless services to scale automatically based on the CPU utilization, you can deploy all the manifests in the "deploy/kubernetes/autoscaling" directory.
 The autoscaling directory contains Kubernetes horizontal pod autoscalers for all the stateless services, and the Heapster monitoring application with it's depedencies.