fixed perf tests and added more scenarios (#683)

* fixed perf tests and added more scenarios

test/Microsoft.SqlTools.ServiceLayer.Test.Common/TestResult.cs

@@ -3,10 +3,31 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 //
 
+using Newtonsoft.Json;
+
 namespace Microsoft.SqlTools.ServiceLayer.Test.Common
 {
     public class TestResult
     {
+        [JsonProperty("elapsedTime")]
         public double ElapsedTime { get; set; }
+
+        [JsonProperty("metricValue")]
+        public double MetricValue { get; set; }
+
+        [JsonProperty("iterations")]
+        public double[] Iterations { get; set; }
+
+        [JsonProperty("ninetiethPercentile")]
+        public double NinetiethPercentile { get; set; }
+
+        [JsonProperty("fiftiethPercentile")]
+        public double FiftiethPercentile { get; set; }
+
+        [JsonProperty("average")]
+        public double Average { get; set; }
+
+        [JsonProperty("primaryMetric")]
+        public string PrimaryMetric { get; set; }
     }
 }