Re-export liftIO from BasicType

This makes usage of ReaderT's liftIO more convenient.
Signed-off-by: Petr Pudlak <pudlak@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>

src/Ganeti/BasicTypes.hs

@@ -35,6 +35,7 @@ module Ganeti.BasicTypes
   , toError
   , toErrorStr
   , Error(..) -- re-export from Control.Monad.Error
+  , MonadIO(..) -- re-export from Control.Monad.IO.Class
   , isOk
   , isBad
   , justOk

src/Ganeti/Config.hs

@@ -55,7 +55,6 @@ module Ganeti.Config
     ) where
 
 import Control.Monad (liftM)
-import Control.Monad.IO.Class (liftIO)
 import Data.List (foldl', nub)
 import qualified Data.Map as M
 import qualified Data.Set as S