Description of problem:

Enabling repo on satellite 6.9 beta through proxy fails if the Proxy server does not have username and password set

Version-Release number of selected component (if applicable):
satellite-6.9 Beta


How reproducible:
New installation


Steps to Reproduce:
1.  Create an HTTP Proxy (Go to Infrastructure > Http Proxies) 
2.  Add proxy details that work without username and password
2.  Go to Administer > Settings > Content tab
3.   Set "Default HTTP Proxy"

Actual results:

Jan 23 23:44:00 vm249-145 pulp: pulp.server.controllers.repository:ERROR: (1775-92704)     raise exceptions.PulpDataException(message)
Jan 23 23:44:00 vm249-145 pulp: pulp.server.controllers.repository:ERROR: (1775-92704) PulpDataException: Configuration errors:
Jan 23 23:44:00 vm249-145 pulp: pulp.server.controllers.repository:ERROR: (1775-92704) The configuration parameter <proxy_username> requires the <proxy_password> parameter to also be set.
Jan 23 23:44:00 vm249-145 pulp: pulp.server.webservices.middleware.exception:INFO: (1775-92704) Configuration errors:
Jan 23 23:44:00 vm249-145 pulp: pulp.server.webservices.middleware.exception:INFO: (1775-92704) The configuration parameter <proxy_username> requires the <proxy_password> parameter to also be set.

Expected results:

Enabling/Sync repositories should work through proxy server set in satellite if it with or without username/password  

Additional info: