staging/lustre: Remove stray space before newline in messages

There were some messages in Lustre that ended with a space followed by
a newline which is pointless, so remove the extra spaces.
Found with checkpatch.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>