fix: fix staging binding connstring

charts/hipster/staging/bindings.yaml

@@ -10,16 +10,10 @@ spec:
   type: bindings.rabbitmq
   version: v1
   metadata:
-  - name: hostname
+  - name: host
-    value: staging-rabbitmq.rabbitmq.svc
-  - name: protocol
-    value: amqp
-  - name: username
-    value: user
-  - name: password
     secretKeyRef:
-      name: staging-rabbitmq
+      name: prod-rabbitmq
-      key:  rabbitmq-password
+      key:  connString
   - name: queueName
     value: staging-hipster-slurm-job-events
   - name: durable