Add connections to SQL Server 2019

Author: alex-kulakov

Orm/Xtensive.Orm.Tests.Framework/Orm.config

@@ -30,6 +30,9 @@
     <domain name="mssql2017"
             connectionUrl="sqlserver://localhost\DO_SQL2017/DO-Tests?MultipleActiveResultSets=True" />
 
+    <domain name="mssql2019"
+            connectionUrl="sqlserver://localhost\DO_SQL2019/DO-Tests?MultipleActiveResultSets=True" />
+
     <domain name="sqlserverce"
             connectionUrl="sqlserverce:///.\DO-Tests.sdf" />
 
@@ -98,6 +101,9 @@
     <domain name="mssql2017cs" provider="sqlserver"
             connectionString="Data Source=localhost\DO_SQL2017;Initial Catalog=DO-Tests;Integrated Security=True;MultipleActiveResultSets=True" />
 
+    <domain name="mssql2019cs" provider="sqlserver"
+            connectionString="Data Source=localhost\DO_SQL2019;Initial Catalog=DO-Tests;Integrated Security=True;MultipleActiveResultSets=True" />
+
     <domain name="sqlservercecs" provider="sqlserverce"
             connectionString="Data Source=.\DO-Tests.sdf" />