[js-perf-test] Specify AsyncAwait tests in JSTests.json

test/js-perf-test/JSTests.json

 {
   "name": "JSTests",
   "run_count": 3,
   "run_count_arm": 1,
   "run_count_arm64": 1,
   "timeout": 120,
   "units": "score",
   "total": true,
   "resources": ["base.js"],
   "tests": [
     {
       "name": "AsyncAwait",
       "path": ["AsyncAwait"],
       "main": "run.js",
       "resources": [
         "native.js",
         "baseline-babel-es2017.js",
         "baseline-naive-promises.js"
       ],
       "flags": ["--allow-natives-syntax"],
-      "results_regexp": "^%s\\-AsyncAwait\\(Score\\): (.+)$"
+      "results_regexp": "^%s\\-AsyncAwait\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "BaselineES2017"},
+        {"name": "BaselineNaivePromises"},
+        {"name": "Native"}
+      ]
     },
     {
       "name": "Generators",
       "path": ["Generators"],
       "main": "run.js",
       "resources": ["generators.js"],
       "flags": ["--harmony-function-sent"],
       "results_regexp": "^Generators\\-Generators\\(Score\\): (.+)$"
     },
     {
@@ skipping 233 matching lines @@
         {"name": "Object.hasOwnProperty--DEINTERN-prop"},
         {"name": "Object.hasOwnProperty--NE-INTERN-prop"},
         {"name": "Object.hasOwnProperty--NE-DEINTERN-prop"},
         {"name": "Object.hasOwnProperty--el"},
         {"name": "Object.hasOwnProperty--el-str"},
         {"name": "Object.hasOwnProperty--NE-el"}
       ]
     }
   ]
 }