Update categories for tests

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla38978.cs

@@ -78,7 +78,7 @@ namespace Xamarin.Forms.Controls.Issues
 
 #if UITEST
 		[Test]
-		[Category("ManualReview")]
+		[Category(Xamarin.Forms.Core.UITests.UITestCategories.ManualReview)]
 		public void Bugzilla38978Test ()
 		{
 			RunningApp.WaitForElement (q => q.Marked ("2"));

Xamarin.Forms.Core.UITests.Shared/Tests/Legacy-CellsUITests.cs

@@ -308,7 +308,7 @@ namespace Xamarin.Forms.Core.UITests
 		}
 
 		[Test]
-		[Category("EntryCell")]
+		[Category(UITestCategories.Cells)]
 		[Description("EntryCell fires .Completed event")]
 		[UiTest(typeof(EntryCell), "Completed")]
 		public void CellsGalleryEntryCellCompleted()

Xamarin.Forms.Core.UITests.Shared/Tests/Legacy-UnevenListTests.cs

@@ -6,7 +6,7 @@ namespace Xamarin.Forms.Core.UITests
 {
 	[TestFixture]
     [Ignore("check if the last one fails")]
-	[Category("Cells")]
+	[Category(UITestCategories.Cells)]
 	internal class UnevenListTests : BaseTestFixture
 	{
 		public UnevenListTests()

Xamarin.Forms.Core.UITests.Shared/Tests/ViewUITests.cs

@@ -1,17 +1,11 @@
-using System;
-using System.Diagnostics;
-using System.Linq;
-using System.Net.Configuration;
-
+
 using NUnit.Framework;
 using Xamarin.Forms.Controls.Issues;
 using Xamarin.Forms.CustomAttributes;
-using Xamarin.UITest.Android;
-using Xamarin.UITest.iOS;
 
 namespace Xamarin.Forms.Core.UITests
 {
-	[Category("ViewBaseTests")]
+	[Category(UITestCategories.ViewBaseTests)]
 	internal abstract class _ViewUITests : BaseTestFixture
 	{
 		protected const string PleaseInspect = "Test framework cannout currently check this value; please inspect visually";

Xamarin.Forms.Core.UITests.Shared/UITestCategories.cs

@@ -2,6 +2,7 @@
 {
 	internal static class UITestCategories
 	{
+		public const string ViewBaseTests = "ViewBaseTests";
 		public const string ActionSheet = "ActionSheet";
 		public const string ActivityIndicator = "ActivityIndicator";
 		public const string Animation = "Animation";