Fixed expected output of BadChecksum test of gridFTP as it has changed with...

Fixed expected output of BadChecksum test of gridFTP as it has changed with the new version of Globus. For the moment the message is not perfect (internal error), but better than the absence of message that was there.

test/testsuite/castortests/gridftp/BadChecksum.output3

+
+error: globus_ftp_client: the server responded with an error
+500 Command failed. : an unknown error occurred

test/testsuite/castortests/gridftp/BadChecksum.output5

@@ -11,4 +11,4 @@
     stager: Waiting for callback from castor
     stager: <uuid5> CBK <answer duration5> s before callback from <server ip5> was received
 Received 1 responses
-Error 2/No such file or directory (File <noTapeFileName> (<fileid@ns>) not on disk cache)
+<noTapeFileName> <fileid@ns> INVALID