Arvados

Two things I saw that require some investigation:

• It seems that in the first run of the installer.sh script, the cron job wasn't set up. I say "it seems" because I logins weren't working, and I looked into /etc/cron.d/ and there were no arvados-login-sync file in it... but on a consecutive script run, logins worked ok.
• Why arvados-login-sync cron job is installed as a root user cron job instead of a system cron job.