tests: don't leave temporary files at end of test

Don't leave temp files around after test has completed successfully.
Some test scripts were creating their own temporary files, and in
some cases test_one was skipping a test completely (e.g. slow) after
the temp file had been created.

Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
4 files changed