Fix Current_user being NULL after reset connection

contrib/babelfishpg_tds/src/backend/tds/tdsprotocol.c

@@ -100,7 +100,6 @@ TdsDiscardAll()
 
 	/* Closing portals might run user-defined code, so do that first. */
 	PortalHashTableDeleteAll();
-	SetPGVariable("session_authorization", NIL, false);
 	ResetAllOptions();
 	DropAllPreparedStatements();
 	Async_UnlistenAll();

test/dotnet/ExpectedOutput/2_Successful_reset.out

@@ -1,4 +1,7 @@
 #Q#select db_name();
 #D#nvarchar
 master
+#Q#select current_user;
+#D#varchar
+dbo
 #Q#drop database db1;

test/dotnet/input/ResetConnection/2_Successful_reset.txt

@@ -1,2 +1,3 @@
 select db_name();
+select current_user;
 drop database db1;

test/dotnet/utils/ConfigSetup.cs

@@ -9,8 +9,6 @@ public static class ConfigSetup
 		/* Declaring variables required for a Test Run. */
 		static readonly Dictionary<string, string> Dictionary = LoadConfig();
 		public static readonly string BblConnectionString = Dictionary["bblConnectionString"];
-
-		public static readonly string BCPConnectionString = Dictionary["BCPConnectionString"];
 		public static readonly string QueryFolder = Dictionary["queryFolder"];
 		public static readonly string TestName = Dictionary["testName"];
 		public static readonly bool RunInParallel = bool.Parse(Dictionary["runInParallel"]);
@@ -47,9 +45,6 @@ public static Dictionary<string, string> LoadConfig()
 
 			/* Creating Server Connection String and Query. */
 			dictionary["bblConnectionString"] = BuildConnectionString(dictionary["babel_URL"], dictionary["babel_port"],
-				dictionary["babel_databaseName"],
-				dictionary["babel_user"], dictionary["babel_password"]) + "pooling=false;";
-			dictionary["BCPConnectionString"] = BuildConnectionString(dictionary["babel_URL"], dictionary["babel_port"],
 				dictionary["babel_databaseName"],
 				dictionary["babel_user"], dictionary["babel_password"]);
 			return dictionary;

test/dotnet/utils/TestUtils.cs

@@ -42,7 +42,7 @@ public bool insertBulkCopy(DbConnection bblCnn, DbCommand bblCmd, String sourceT
 				/* To Enforce Reset Connection. */
 				reader = bblCmd.ExecuteReader();
 				using (SqlConnection destinationConnection =
-                       new SqlConnection(ConfigSetup.BCPConnectionString))
+                       new SqlConnection(ConfigSetup.BblConnectionString))
 				{
 					destinationConnection.Open();