remotefilelog: use the correct redirection in tests
The test were using '2>%1' which just redirect stderr in the "%1" file. The
intend was '2>&1' which redirect stderr on stdin.
This impact tests because some commit were picking up this '%1' files.
Differential Revision: https://phab.mercurial-scm.org/D7588
#require serve
$ hg clone http://localhost:$HGPORT/ copy
abort: * (glob)
[255]
$ test -d copy
[1]
$ "$PYTHON" "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid
$ cat dumb.pid >> $DAEMON_PIDS
$ hg clone http://localhost:$HGPORT/foo copy2
abort: HTTP Error 404: * (glob)
[255]
$ killdaemons.py