Re: [rhinstaller/anaconda/pulls/515 rhel7-branch] More descriptive message on invalid username

[dashea]

> @@ -166,7 +166,11 @@ def prompt(self, entry = None):
>              return _("Enter new value for '%s' and press enter\n") % entry.title
>  def input(self, entry, key):
>    if entry.aux.match(key):
>    not_allowed_dirs = ['etc', 'boot', 'opt', 'proc', 'lib64', 'sbin', 'mnt',
>                        'lib', 'var', 'lost+found', 'sys', 'usr',
>                        '.esmtp_queue', 'dev', 'tmp', 'home', 'srv', 'root',
>                         'run', 'bin', 'media', 'daemon']

This list should definitely live somewhere else so that it can be used from other places in code as well. For example, how are we checking this in GUI?