We should be doing more to ensure initial configuration during
configuration. Taken from the steps done by [1], here we set
locale.conf and a general timezone.
The only reliable UTF8 locale is en_US.UTF-8; we don't want to use C
locale as it causes havoc with things like python3 and unicode. We
set locale.conf to this.
For Fedora 24 ensure we install the en_* locales too (this is really a
bug separate to this -- when you log in, by default ssh tries to copy
over your locale env variables, so logging into a F24 system would
result in using invalid locales for the most common en_* cases).
While we are here, setup a timezone link. It turns out infra puppet
overwrites this later, but at least we have a sane default.
[1] https://www.freedesktop.org/software/systemd/man/systemd-firstboot.html#
Change-Id: Ib8951a97f1772bc5228c682e88628ff53400a923
b745821353