Accept connection overrides in Open and OpenAsync.

Author: mdaigle

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClientX/SqlConnectionX.cs

@@ -159,10 +159,16 @@ public override Task<DataTable> GetSchemaAsync(string collectionName, string?[]
 
         /// <inheritdoc/>
         public override void Open()
+            => Open(SqlConnectionOverrides.None);
+
+        public void Open(SqlConnectionOverrides overrides)
             => throw new NotImplementedException();
 
         /// <inheritdoc/>
         public override Task OpenAsync(CancellationToken cancellationToken)
+            => OpenAsync(cancellationToken, SqlConnectionOverrides.None);
+
+        public Task OpenAsync(CancellationToken cancellationToken, SqlConnectionOverrides overrides)
             => throw new NotImplementedException();
 
         /// <inheritdoc/>