tests: allow e2fsck tests to run on OS/X

The "mktemp" program requires a template on OS/X.  Allow the test
TMPFILE to be created in the local /tmp directory for both OS/X
and Linux.

Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
1 file changed