chore(monitoring): 모니터링용 서비스 모니터 추가

k8s/release/monitoring.yaml

@@ -0,0 +1,16 @@
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: spring-boot-app-monitor
+  namespace: monitoring
+spec:
+  selector:
+    matchLabels:
+      app: spring-boot-app
+  namespaceSelector:
+    matchNames:
+      - grass-diary-backend-release
+  endpoints:
+    - port: 80
+      path: /actuator/prometheus
+      interval: 15s