enable BinaryClassifierSymSgdTest (#4863)

* enable BinaryClassifierSymSgdTest

* add TODO tag for linux and macos cases so we can easily go back to issue

Author: frank-dong-ms-zz

test/Microsoft.ML.Predictor.Tests/TestPredictors.cs

@@ -276,16 +276,14 @@ public void BinaryClassifierLogisticRegressionTest()
 
         [X64Fact("x86 output differs from Baseline")]
         [TestCategory("Binary")]
-        //Skipping test temporarily. This test will be re-enabled once the cause of failures has been determined
-        [Trait("Category", "SkipInCI")]
         public void BinaryClassifierSymSgdTest()
         {
-            // Linux uses a version of MKL that doesn't support conditional numerical reproducibility the same way as
+            // TODO: Linux uses a version of MKL that doesn't support conditional numerical reproducibility the same way as
             // Windows runs.
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
                 return;
 
-            //Results sometimes go out of error tolerance on OS X.
+            // TODO: Results sometimes go out of error tolerance on OS X.
             if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
                 return;