add app nexus

kubernetes/apps/nexus/app/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: nexus
+  namespace: nexus
+  annotations:
+    prometheus.io/scrape: 'true'
+    prometheus.io/path:   /
+    prometheus.io/port:   '8081'
+spec:
+  selector:
+    app: nexus
+  type: NodePort
+  ports:
+    - port: 8081
+      targetPort: 8081
+      nodePort: 32000