[#239] write cache metrics

src/frostfs_testlib/load/load_config.py

@@ -119,6 +119,8 @@ class NodesSelectionStrategy(Enum):
     ALL_EXCEPT_UNDER_TEST = "ALL_EXCEPT_UNDER_TEST"
     # Select ONE random node except under test (useful for failover).
     RANDOM_SINGLE_EXCEPT_UNDER_TEST = "RANDOM_SINGLE_EXCEPT_UNDER_TEST"
+    # Select node under test
+    NODE_UNDER_TEST = "NODE_UNDER_TEST"
 
 
 class EndpointSelectionStrategy(Enum):