Test appveyor

Author: bahusoid

appveyor.yml

@@ -2,14 +2,17 @@ version: '{build}'
 image: Visual Studio 2017
 environment:
   matrix:
-  - DB: SqlServer2008
-    CONNECTION_STRING: Server=(local)\SQL2017;User ID=sa;Password=Password12!;initial catalog=nhibernate;
-  - DB: PostgreSQL
-    CONNECTION_STRING: Host=localhost;Port=5432;Username=postgres;Password=Password12!;Database=nhibernate;Enlist=true;
-  - DB: Firebird
-  - DB: MySQL
-    CONNECTION_STRING: Server=127.0.0.1;Uid=root;Pwd=Password12!;Database=nhibernate;Old Guids=True;
-  - DB: SQLite
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+    - DB: Firebird
+
 init:
     # Required for having windows endlines in sources zip
     - git config --global core.autocrlf true