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/dnsmasq/templates/dnsmasq-deploy.yml

@@ -0,0 +1,64 @@
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: dnsmasq
+  namespace: "{{system_namespace}}"
+  labels:
+    k8s-app: dnsmasq
+    kubernetes.io/cluster-service: "true"
+spec:
+  replicas: {{ dnsmasq_min_replicas }}
+  selector:
+    matchLabels:
+      k8s-app: dnsmasq
+  template:
+    metadata:
+      labels:
+        k8s-app: dnsmasq
+        kubernetes.io/cluster-service: "true"
+    spec:
+      containers:
+        - name: dnsmasq
+          image: "{{ dnsmasq_image_repo }}:{{ dnsmasq_image_tag }}"
+          imagePullPolicy: {{ k8s_image_pull_policy }}
+          command:
+            - dnsmasq
+          args:
+            - -k
+            - -C
+            - /etc/dnsmasq.d/01-kube-dns.conf
+          securityContext:
+            capabilities:
+              add:
+                - NET_ADMIN
+          imagePullPolicy: IfNotPresent
+          resources:
+            limits:
+              cpu: {{ dns_cpu_limit }}
+              memory: {{ dns_memory_limit }}
+            requests:
+              cpu: {{ dns_cpu_requests }}
+              memory: {{ dns_memory_requests }}
+          ports:
+            - name: dns
+              containerPort: 53
+              protocol: UDP
+            - name: dns-tcp
+              containerPort: 53
+              protocol: TCP
+          volumeMounts:
+            - name: etcdnsmasqd
+              mountPath: /etc/dnsmasq.d
+            - name: etcdnsmasqdavailable
+              mountPath: /etc/dnsmasq.d-available
+
+      volumes:
+        - name: etcdnsmasqd
+          hostPath:
+            path: /etc/dnsmasq.d
+        - name: etcdnsmasqdavailable
+          hostPath:
+            path: /etc/dnsmasq.d-available
+      dnsPolicy: Default  # Don't use cluster DNS.
+