Adding shutdown to test app

CqlTest/CartManager.cs

@@ -13,11 +13,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+using CqlSharp;
+using CqlSharp.Protocol;
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
-using CqlSharp;
-using CqlSharp.Protocol;
 
 namespace CqlTest
 {
@@ -79,7 +79,7 @@ public async Task PrepareDbAsync()
         /// <returns> </returns>
         public async Task<Cart> AddCartAsync(string groupId)
         {
-            var c = new Cart {Id = Guid.NewGuid(), GroupId = groupId};
+            var c = new Cart { Id = Guid.NewGuid(), GroupId = groupId };
 
             using (var connection = new CqlConnection("cartDB"))
             {
@@ -181,5 +181,10 @@ public async Task<List<Cart>> FindCartsByGroupIdAsync(string groupId)
                 }
             }
         }
+
+        public void Shutdown()
+        {
+            CqlConnection.ShutdownAll();
+        }
     }
 }

CqlTest/Program.cs

@@ -205,6 +205,8 @@ public void Run(int queries, int threads, int prepared)
             {
                 WriteStatistics(call.Key, call.Value);
             }
+
+            _manager.Shutdown();
         }
 
         public string DoubleString(double value)