Enable and record Stretch tests

Fixes Azure#4148

Author: jaredmoo

src/ResourceManager/Sql/Commands.Sql.Test/ScenarioTests/DatabaseBackupStretchTests.cs

@@ -28,7 +28,7 @@ public DatabaseBackupStretchTests(ITestOutputHelper output) : base(output)
         {
         }
 
-        [Fact(Skip = "Skip all Stretch edition tests")]
+        [Fact]
         [Trait(Category.AcceptanceType, Category.CheckIn)]
         public void TestStretchDatabaseListRestorePoints()
         {

src/ResourceManager/Sql/Commands.Sql.Test/ScenarioTests/DatabaseCrudStretchTests.cs

@@ -28,28 +28,28 @@ public DatabaseCrudStretchTests(ITestOutputHelper output) : base(output)
         {
         }
 
-        [Fact(Skip = "Skip all Stretch edition tests")]
+        [Fact]
         [Trait(Category.AcceptanceType, Category.CheckIn)]
         public void TestStretchDatabaseCreate()
         {
             RunPowerShellTest("Test-CreateStretchDatabase");
         }
 
-        [Fact(Skip = "Skip all Stretch edition tests")]
+        [Fact]
         [Trait(Category.AcceptanceType, Category.CheckIn)]
         public void TestStretchDatabaseUpdate()
         {
             RunPowerShellTest("Test-UpdateStretchDatabase");
         }
 
-        [Fact(Skip = "Skip all Stretch edition tests")]
+        [Fact]
         [Trait(Category.AcceptanceType, Category.CheckIn)]
         public void TestStretchDatabaseGet()
         {
             RunPowerShellTest("Test-GetStretchDatabase");
         }
 
-        [Fact(Skip = "Skip all Stretch edition tests")]
+        [Fact]
         [Trait(Category.AcceptanceType, Category.CheckIn)]
         public void TestStretchDatabaseRemove()
         {