added sub types for parameters (#340)

test/Microsoft.SqlTools.ServiceLayer.Test.Common/TestData/ObjectExplorer/TestScripts/AllSqlObjects.sql

@@ -391,4 +391,17 @@
 GO
 
 /****** Column Set ***/
-CREATE TABLE tableWithColumnset (i int SPARSE, cs xml column_set FOR ALL_SPARSE_COLUMNS); 
+CREATE TABLE tableWithColumnset (i int SPARSE, cs xml column_set FOR ALL_SPARSE_COLUMNS); 
+GO
+
+
+/****** Procedure With output parameter ***/
+CREATE PROCEDURE uspGetList @Product varchar(40)   
+    , @MaxPrice money 
+    , @ComparePrice money OUTPUT  
+    , @ListPrice money OUT  
+AS  
+   select 1
+-- Populate the output variable @compareprice.  
+SET @ComparePrice = @MaxPrice;  
+GO