Description of problem:
dnf gives unicode error in spanish, so is unusable unless you set LANG=C

Version-Release number of selected component (if applicable):

$ rpm -q dnf
dnf-1.1.1-2.fc22.noarch


How reproducible:

Set your language to spanish and run dnf

Steps to Reproduce:

$ LANG=es_AR.UTF-8 dnf
Traceback (most recent call last):
  File "/bin/dnf", line 36, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 198, in user_main
    errcode = main(args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 84, in main
    return _main(base, args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 117, in _main
    cli.configure(map(ucd, args))
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 1007, in configure
    self.optparser.usage = self.optparser.get_usage()
  File "/usr/lib/python2.7/site-packages/dnf/cli/option_parser.py", line 273, in get_usage
    usage += "%-25s %s\n" % (name, summary)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 40: ordinal not in range(128)

$ LANG=es_ES.UTF-8 dnf
Traceback (most recent call last):
  File "/bin/dnf", line 36, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 198, in user_main
    errcode = main(args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 84, in main
    return _main(base, args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 117, in _main
    cli.configure(map(ucd, args))
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 1007, in configure
    self.optparser.usage = self.optparser.get_usage()
  File "/usr/lib/python2.7/site-packages/dnf/cli/option_parser.py", line 273, in get_usage
    usage += "%-25s %s\n" % (name, summary)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 40: ordinal not in range(128)

Expected results:

LANG=C dnf
You need to give some command
usage: dnf [options] COMMAND

List of Main Commands

autoremove                
...
...

Additional info:

It fails with every dnf option that I tried.