bootstrap: fix locale command

also added the locale to the testenv pre-deploy.yml,
machines spun up by test was giving locale errors in
shell.

there's a few items in the two that should
be DRYed up a little.
de-variablize locale
Merge pull request #528 from blueboxgroup/fix/locale

bootstrap: fix locale command
Update requirements

Updating ansible to 1.7.2
tls: crt in local folder, auto trusted

Add the OpenStack services crt and the rsyslog logging cert into the
local directory to be picked up.
Any .crt files in /usr/local/share/ca-certificates are automatically
trusted by update-ca-certificates when run.

Based on man page found at:
http://manpages.ubuntu.com/manpages/precise/man8/update-ca-certificates.8.html
Merge branch 'fix/update-ca-certs' of github.com:blueboxgroup/ursula into refactor