Description of problem:
mbs-manager throws traceback because of the missing dependency.

Version-Release number of selected component (if applicable):
module-build-service-2.11.1-1.fc29.noarch

How reproducible:
always

Steps to Reproduce:
1. dnf install module-build-service
2. mbs-manager build_module_locally 


Actual results:
2019-01-09 09:30:34,232 - MainThread - urllib3.util.retry - DEBUG - Converted retries value: 3 -> Retry(total=3, connect=None, read=None, redirect=None, status=None)
2019-01-09 09:30:34,521 - MainThread - moksha.hub - WARNING - Cannot find qpid python module. Make sure you have python-qpid installed.
Traceback (most recent call last):
  File "/usr/bin/mbs-manager", line 11, in <module>
    load_entry_point('module-build-service==2.11.1', 'console_scripts', 'mbs-manager')()
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 484, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 2714, in load_entry_point
    return ep.load()
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 2332, in load
    return self.resolve()
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 2338, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python3.7/site-packages/module_build_service/manage.py", line 41, in <module>
    import module_build_service.scheduler.consumer
  File "/usr/lib/python3.7/site-packages/module_build_service/scheduler/__init__.py", line 7, in <module>
    import module_build_service.scheduler.consumer
  File "/usr/lib/python3.7/site-packages/module_build_service/scheduler/consumer.py", line 45, in <module>
    import module_build_service.scheduler.handlers.repos
  File "/usr/lib/python3.7/site-packages/module_build_service/scheduler/handlers/repos.py", line 26, in <module>
    import module_build_service.builder
  File "/usr/lib/python3.7/site-packages/module_build_service/builder/__init__.py", line 10, in <module>
    GenericBuilder.register_backend_class(entrypoint.load())
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 2332, in load
    return self.resolve()
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 2338, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python3.7/site-packages/module_build_service/builder/KojiModuleBuilder.py", line 56, in <module>
    from module_build_service.builder.KojiContentGenerator import KojiContentGenerator
  File "/usr/lib/python3.7/site-packages/module_build_service/builder/KojiContentGenerator.py", line 43, in <module>
    import pungi.arch
ModuleNotFoundError: No module named 'pungi'


Expected results:
python3-pungi should be installed as a dependency.

Additional info: