fix(update-bootengine): Fix terrible typo that broke namespace creation.

No idea how I managed to not notice this till today but
update-bootengine has not been automatically creating new filesystem
namespaces for quite some time now. Oops.
fix(update-bootengine): Silence setlocale errors

If the environment contains something like LANG=en_US.UTF-8 setlocale
will complain during the dracut run inside our minimal build
environment which doesn't have any extra locales.
Merge pull request #14 from marineam/nsfix

Nsfix