Make Vcpkg Experimental detector (#216)

* Make Vcpkg Experimental detector

Author: grvillic

src/Microsoft.ComponentDetection.Contracts/IComponentDetector.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.ComponentDetection.Contracts.TypedComponent;
 
@@ -53,7 +53,7 @@ public interface IDefaultOffComponentDetector : IComponentDetector
     /// <summary>
     /// Component detectors implementing this interface are in an experimental state.
     /// The detector processing service guarantees that:
-    ///     They should NOT return their components as part of the scan result or be allowed to run too long (e.g. 2 min or less).
+    ///     They should NOT return their components as part of the scan result or be allowed to run too long (e.g. 4 min or less).
     ///     They SHOULD submit telemetry about how they ran.
     /// If opted in, they should behave like a normal detector.
     /// </summary>

src/Microsoft.ComponentDetection.Detectors/vcpkg/VcpkgComponentDetector.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Composition;
 using System.IO;
@@ -13,7 +13,7 @@
 namespace Microsoft.ComponentDetection.Detectors.Vcpkg
 {
     [Export(typeof(IComponentDetector))]
-    public class VcpkgComponentDetector : FileComponentDetector, IDefaultOffComponentDetector
+    public class VcpkgComponentDetector : FileComponentDetector, IExperimentalDetector
     {
         [Import]
         public ICommandLineInvocationService CommandLineInvocationService { get; set; }
@@ -29,7 +29,7 @@ public class VcpkgComponentDetector : FileComponentDetector, IDefaultOffComponen
 
         public override IEnumerable<ComponentType> SupportedComponentTypes { get; } = new[] { ComponentType.Vcpkg };
 
-        public override int Version => 1;
+        public override int Version => 2;
 
         private HashSet<string> projectRoots = new HashSet<string>();