Changes to add tracelog for Featureflag exceptions (#4809)

* Changes to tracelog Featueflag exceptions

* Addressing review comments

* Convertring the trace to error

* nit changes

---------

Co-authored-by: Dmitrii Bobreshev <[email protected]>

Author: dogirala

src/Agent.Worker/TestResults/Utils/FeatureFlagService.cs

@@ -44,9 +44,11 @@ public bool GetFeatureFlagState(string featureFlagName, Guid serviceInstanceId)
                 }
                 _executionContext.Debug(StringUtil.Format("{0} is off", featureFlagName));
             }
-            catch
+            catch(Exception ex)
             {
-                _executionContext.Debug(StringUtil.Format("Failed to get FF {0} Value.", featureFlagName));
+                var exceptionMessage = StringUtil.Format("Failed to get FF {0} Value. Error: {1}", featureFlagName, ex.ToString());
+                _executionContext.Warning(exceptionMessage);
+                Trace.Error(exceptionMessage);
             }
             return false;
         }