L2SS-245: move auto polling performance test to its own dir

devices/test/devices/automatic_polling_performance_test/automatic_polling_performance_test.json

+{
+    "servers":
+    {
+        "monitoring_performance_test":
+        {
+            "1":
+            {
+                "Monitoring_Performance_Device":
+                {
+                    "test/monitoring_performance/1":
+                    {
+                    },
+                    "test/monitoring_performance/2":
+                    {
+                    }
+                }
+            }
+        }
+    }
+}