Instead of logging to a separate file which must be rotated manually, use the
syslog (journald on teuthology.front).
Keep a temporary unlinked file around in case we want to dump that to the
cronjob stdout for a mail status.
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
/bin/bash is a Linuxism. Other operating systems install bash to
different paths. Use /usr/bin/env in shebangs to find bash.
Signed-off-by: Alan Somers <asomers@gmail.com>
