temporary file outside the kyua sandbox
This helps ensure that the file is removed at test exit, and as
a side effect, cures a warning about umasks with Coverity.
MFC after: 3 days
Sponsored by: Dell EMC Isilon
of -1 with err*(3).
An exit code of -1 is implementation defined -- it's best to stick
with something well-defined (1).
MFC after: 3 days
Sponsored by: Dell EMC Isilon
