feat(infrastructure): add env to worker deployment

deployment/app-demo-worker-deployment.yaml

@@ -19,3 +19,15 @@ spec:
           command:
             - python3
             - worker/email_worker.py
+          env:
+            - name: RABBITMQ_USERNAME
+              value: admin
+            - name: RABBITMQ_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: rabbitmq
+                  key: rabbitmq-password
+            - name: RABBITMQ_HOST
+              value: rabbitmq.rabbitmq.svc.cluster.local
+            - name: RABBITMQ_PORT
+              value: '5672'