[Dev] dbscripts 2018425.1 / winston.parabola.nu upgrade

[Luke Shumaker]

I've rolled out version 20180429.1 of Parabola dbscripts.

Changes from 20180429 to 20180429.1:

 - db-import-pkg:
   * Don't shove files directly in /tmp, put them in $WORKDIR
   * Log full output from `repo-add`
   * Add systemd timers to run cron jobs

On winston.parabola.nu, I have
 - Upgraded the package
 - Commented out repo@'s entire crontab
 - Enabled the now-included systemd timers

This implements step 5 of my pan for improving dbscripts.  I have
bumped step 5 ahead of steps 3 & 4 because it entails better logging,
which is very helpful in working through issue #1770
<https://labs.parabola.nu/issues/1770>.

  [X] 1. Split archlinux -> {packages,community}
  [X] 2. Add config.local.* files
  [-] 3. Set up the `repo` group        [eta: 2018-05-02]
  [ ] 4. Set DBSCRIPTS_CONFIG           [eta: 2018-05-02]
  [X] 5. Use systemd timers
  [ ] 6. Use db-update                  [eta: 2018-05-04]
  [ ] 7. Migrate humans off of repo@    [eta: no sooner than 2018-05-05]
  [ ] 8. Migrate robots off of repo@    [eta: no sooner than 2018-05-12]

I do not believe that issue #1770 is related to the changes made in
step 1, but I am not sure of that.

-- 
Happy hacking,
~ Luke Shumaker