appveyor: workaround for "Cannot connect to SQL2012SP1"

Author: dg

tests/databases.appveyor.ini

@@ -11,13 +11,13 @@ dsn = "sqlsrv:Server=(local)\SQL2008R2SP2;Database=master"
 user = sa
 password = "Password12!"
 
-[sqlsrv 2012]
-dsn = "sqlsrv:Server=(local)\SQL2012SP1;Database=master"
-user = sa
-password = "Password12!"
-
 ; NDB does not differentiate between 2012 and 2014
-;[sqlsrv 2014]
-;dsn = "sqlsrv:Server=(local)\SQL2014;Database=master"
+;[sqlsrv 2012]
+;dsn = "sqlsrv:Server=(local)\SQL2012SP1;Database=master"
 ;user = sa
 ;password = "Password12!"
+
+[sqlsrv 2014]
+dsn = "sqlsrv:Server=(local)\SQL2014;Database=master"
+user = sa
+password = "Password12!"