Add autoscalers for dnsmasq and kubedns

By default kubedns and dnsmasq scale when installed.
Dnsmasq is no longer a daemonset. It is now a deployment.
Kubedns is no longer a replicationcluster. It is now a deployment.
Minimum replicas is two (to enable rolling updates).

Reduced memory erquirements for dnsmasq and kubedns

roles/kubernetes-apps/ansible/tasks/main.yml

@@ -13,15 +13,16 @@
     src: "{{item.file}}"
     dest: "{{kube_config_dir}}/{{item.file}}"
   with_items:
-    - {file: kubedns-rc.yml, type: rc}
-    - {file: kubedns-svc.yml, type: svc}
+    - {name: kubedns, file: kubedns-deploy.yml, type: deployment}
+    - {name: kubedns, file: kubedns-svc.yml, type: svc}
+    - {name: kubedns-autoscaler, file: kubedns-autoscaler.yml, type: deployment}
   register: manifests
   when: dns_mode != 'none' and inventory_hostname == groups['kube-master'][0]
   tags: dnsmasq
 
 - name: Kubernetes Apps | Start Resources
   kube:
-    name: kubedns
+    name: "{{item.item.name}}"
     namespace: "{{ system_namespace }}"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"