Trailing newlines + standardize tabs -> spaces

test/dotnet.Tests/GivenThatTheUserIsRunningDotNetForTheFirstTime.cs

@@ -36,7 +36,7 @@ namespace Microsoft.DotNet.Tests
             _firstDotnetVerbUseCommandResult = command.ExecuteWithCapturedOutput("new --debug:ephemeral-hive");
 
             _nugetCacheFolder = new DirectoryInfo(testNugetCache);
-        }        
+        }
 
         [Fact]
         public void UsingDotnetForTheFirstTimeSucceeds()
@@ -135,4 +135,4 @@ A command is running to initially populate your local package cache, to improve
             return s.Replace("\r\n", "\n").Replace("\r", "\n");
         }
     }
-}
+}