Set a password for Redis server

.jenkins

@@ -51,7 +51,12 @@ spec:
     - name: POSTGRES_PASSWORD
       value: netbox
   - name: redis
-    image: redis:latest
+    image: redis:5
+    command:
+    - redis-server
+    args:
+    - --appendonly yes
+    - --requirepass netbox
   nodeSelector:
     cloud.google.com/gke-nodepool: jenkins
   tolerations:
@@ -130,4 +135,4 @@ spec:
       }
     }
   }
-}
+}