Description of problem:
After installing fedora-repos-modular on Fedora 28, DNF crashes with ValueError: too many values to unpack (expected 2)

Version-Release number of selected component (if applicable):
dnf-2.7.5-9.fc28.noarch

Steps to Reproduce:
1. Install Fedora 28 (I used Fedora-Cloud-Base-28_Beta-1.3.x86_64)
2. dnf -y --refresh update
3. dnf -y install fedora-repos-modular
4. dnf update

Actual results:
Traceback (most recent call last):
  File "/usr/bin/dnf", line 58, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 179, in user_main
    errcode = main(args)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 64, in main
    return _main(base, args, cli_class, option_parser_class)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 99, in _main
    return cli_run(cli, base)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 115, in cli_run
    cli.run()
  File "/usr/lib/python3.6/site-packages/dnf/cli/cli.py", line 1015, in run
    self._process_demands()
  File "/usr/lib/python3.6/site-packages/dnf/cli/cli.py", line 768, in _process_demands
    load_available_repos=self.demands.available_repos)
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 455, in fill_sack
    self._setup_excludes_includes()
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 196, in _setup_excludes_includes
    self.use_module_includes()
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 238, in use_module_includes
    update_include_nevras(repo_module.name, repo_module.conf.stream)
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 230, in update_include_nevras
    include_set, _ = self.repo_module_dict.get_includes(name, stream)
  File "/usr/lib/python3.6/site-packages/dnf/module/repo_module_dict.py", line 165, in get_includes
    version_dependencies = self.get_module_dependency(name, stream)
  File "/usr/lib/python3.6/site-packages/dnf/module/repo_module_dict.py", line 141, in get_module_dependency
    repo_module_version.requires():
ValueError: too many values to unpack (expected 2)

Expected results:
DNF keeps working with modular repos enabded.

Additional info:
This is fixed by https://github.com/rpm-software-management/dnf/pull/1054