Clear temp files daily

src/freedombone-utils-cron

 function schedule_stig_tests {
     echo '#!/bin/bash' > /etc/cron.daily/stig_tests
     echo "pkill ${PROJECT_NAME}-tests" >> /etc/cron.daily/stig_tests
+    echo 'rm -rf /tmp/*' >> /etc/cron.daily/stig_tests
     echo '${PROJECT_NAME}-tests --stig yes' >> /etc/cron.daily/stig_tests
     chmod +x /etc/cron.daily/stig_tests
 }