VM name is trusty (ubuntu codename)
All roles are comment out for renewal
bash: Enable color prompt
hostname: Update hostname from inventory file
timezone: Set JST localtime and write to hardware clock
bash: Fix adding needless line when multi run
openssh: Fix vagrant box does not have ssh_host_ed25519_key
hostname: Don't create backup, control by etckeeper
timezone: Never report as "changed" when run hardware clock update task
openssh: Configure OpenSSH Server

- PermitRootLogin without-password
- PasswordAuthentication no
- UsePAM no
ufw: Allow OpenSSH
Remove needless vars for OpenSSH
apt: from ftp.jaist.ac.jp, autoremove and autoclean
ntp: ntp.jst.mfeed.ad.jp, ntp.nict.jp
timezone: Remove needless var (only Japan)
apt: Remove needless vars
Remove needles roles (were commented out so no effect)
Remove roles installed from garaxy
postfix: Ooops
Ignore refs dir, roles installed from garaxy