New playbooks for k8s service and examples

- kubedns moved to playbooks dir
- new ansible playbooks added for kubedash and kube-dashboard
- examples for k8s deployments and services added

examples/kubernetes/external-nginx/README.md

@@ -0,0 +1,18 @@
+Nginx example with external IPs
+===============================
+
+* Edit `nginx-frontend.yaml` and update `externalIPs` to the list of external IPs of your k8s minions
+
+* Deploy:
+
+```bash
+kubectl create -f nginx-backends.yaml
+kubectl create -f nginx-frontend.yaml
+```
+
+* Check:
+
+```bash
+curl $ANY_MINION_EXTERNAL_IP
+```
+