fix metrics json response test

lbry/lbry/wallet/server/metrics.py

@@ -120,11 +120,11 @@ class ServerLoadData:
             self._apis[name] = APICallMetrics(name)
         return self._apis[name]
 
-    def to_json_and_reset(self, server):
+    def to_json_and_reset(self, status):
         try:
             return {
                 'api': {name: api.to_json_and_reset() for name, api in self._apis.items()},
-                'server': server
+                'status': status
             }
         finally:
             self._apis = {}

lbry/tests/unit/wallet/server/test_metrics.py

@@ -59,4 +59,4 @@ class TestCollectingMetrics(unittest.TestCase):
             'wait_avg': 12,
             'wait_percentiles': (10, 10, 10, 12, 14, 15, 15)
         }}})
-        self.assertEqual(load.to_json_and_reset({}), {'api': {}})
+        self.assertEqual(load.to_json_and_reset({}), {'status': {}, 'api': {}})