revert config changes

Author: g.yakimov

src/NHibernate.Test/App.config

@@ -7,7 +7,7 @@
 	</configSections>
 
 	<connectionStrings>
-		<add name="TestConnectionString" connectionString="Server=localhost;Database=nhibernate;Integrated Security=SSPI" />
+		<add name="TestConnectionString" connectionString="Server=localhost\sqlexpress;Database=nhibernate;Integrated Security=SSPI" />
 		<add name="DummyConnectionString" connectionString="TestConnectionString-TestConnectionString" />
 	</connectionStrings>
 
@@ -31,7 +31,7 @@
 			<property name="dialect">NHibernate.Dialect.MsSql2008Dialect</property>
 
 			<property name="connection.driver_class">NHibernate.Driver.Sql2008ClientDriver</property> <!-- Shouldn't be necessary, but is required by some tests -->
-			<property name="connection.connection_string">Server=localhost;Database=nhibernate;Integrated Security=SSPI</property>
+			<property name="connection.connection_string">Server=localhost\sqlexpress;Database=nhibernate;Integrated Security=SSPI</property>
 			<property name="connection.provider">NHibernate.Test.DebugConnectionProvider, NHibernate.Test</property>
 			<property name="connection.isolation">ReadCommitted</property> <!-- See System.Data.IsolationLevel for valid values -->