Add Grafana manifests

manifests/grafana/grafana-depl.yaml

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+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: grafana
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: grafana
+    spec:
+      containers:
+      - name: grafana
+        image: grafana/grafana:3.1.1
+        volumeMounts:
+        - name: grafana-storage
+          mountPath: /var/grafana-storage
+        ports:
+        - name: web
+          containerPort: 3000
+        resources:
+          requests:
+            memory: 100Mi
+            cpu: 100m
+          limits:
+            memory: 300Mi
+            cpu: 300m
+      - name: grafana-watcher
+        image: quay.io/coreos/grafana-watcher:latest
+        args:
+          - '--watch-dir=/var/grafana-dashboards'
+          - '--grafana-url=http://admin:admin@localhost:3000'
+        volumeMounts:
+        - name: grafana-dashboards
+          mountPath: /var/grafana-dashboards
+        resources:
+          requests:
+            memory: "16Mi"
+            cpu: "50m"
+          limits:
+            memory: "32Mi"
+            cpu: "100m"
+        volumeMounts:
+        - name: grafana-dashboards
+          mountPath: /var/grafana-dashboards
+      volumes:
+      - name: grafana-storage
+        emptyDir: {}
+      - name: grafana-dashboards
+        configMap:
+          name: grafana-dashboards
+      imagePullSecrets:
+      - name: coreos-quay
+

manifests/grafana/grafana-svc.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: grafana
+  labels:
+    app: grafana
+  annotations:
+    prometheus.io/scrape: 'true'
+spec:
+  ports:
+  - name: web
+    port: 3000
+    protocol: TCP
+    nodePort: 30902
+  selector:
+    app: grafana
+  type: NodePort