Planet does not set libc locale

[kontsevoy]

Problemo!

Planet image does not have libc locales configured. This means that every application will default to C locale which means no UTF support.

To fix:

Install libc-locale package to the base image and configure it to UTF-8. To validate, the following should be possible when you're inside of Planet:

> locale

Output:

LANG=en_US.UTF-8
LANGUAGE=
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

[kontsevoy]

This bug should be closed by PR @29 with some reservations:

1. A locale must actually be installed first. That PR does that by moving to Debian Docker image for RootFS, so en_US.UTF-8 is installed by default.
2. A locale must also be set. This is usually done by setting environment variables for a process. That's something that packages need to do.