fix(webui): add memory info to replicasets

src/http_server.lua

@@ -121,9 +121,13 @@ local function list_replicasets()
                     version = VERSION_PLACEHOLDER,
                     grade = is_leader and instance.current_grade[1],
                     -- frontend expects number
-                    capacity =
+                    capacityUsage =
                         is_leader
                         and instance_memory_info.quota_used / instance_memory_info.quota_size * 100,
+                    memory = is_leader and {
+                        used = instance_memory_info.quota_used,
+                        usable = instance_memory_info.quota_size,
+                    },
                 }
             else
                 local replicaset = acc[instance.replicaset_uuid]

test/int/test_http_server.py

@@ -56,7 +56,11 @@ def test_webui(cluster_with_webui: Cluster):
                     }
                 ],
                 "instanceCount": 1,
-                "capacity": 100,
+                "capacityUsage": 100,
+                "memory": {
+                    "usable": 33554432,
+                    "used": 33554432,
+                },
                 "uuid": instance.replicaset_uuid(),
                 "id": "r1",
             }