Description of problem:
engine-setup fails to install when "Gluster" is selected as "Application mode"

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


How reproducible:
Every time when application mode is selected as "gluster" in install wizard.

Steps to Reproduce:
1. Run sudo engine-setup
2. When asks for application mode enter "gluster" rest all can be default.


Actual results:
[ INFO  ] Stage: Transaction setup
[ INFO  ] Stopping engine service
[ INFO  ] Stage: Misc configuration
[ INFO  ] Stage: Package installation
[ INFO  ] Stage: Misc configuration
[ INFO  ] Creating PostgreSQL database
[ INFO  ] Configurating PostgreSQL
[ INFO  ] Creating database schema
[ ERROR ] Failed to execute stage 'Misc configuration': 'NFS'
[ INFO  ] Yum Performing yum transaction rollback
[WARNING] Rolling back upgrade
[ INFO  ] Clearing database engine
[ INFO  ] Stage: Clean up
          Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-setup-20130830113329.log
[ INFO  ] Stage: Pre-termination
[ INFO  ] Stage: Termination
[ ERROR ] Execution of setup failed


Expected results:
Execution of setup should get completed successfully.

Additional info:
From log:

2013-08-30 11:15:21 DEBUG otopi.context context._executeMethod:119 Stage misc METHOD otopi.plugins.ovirt_engine_setup.config.domain_type.Plugin._mis
c
2013-08-30 11:15:21 DEBUG otopi.context context._executeMethod:133 method exception
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/otopi/context.py", line 123, in _executeMethod
    method['method']()
  File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/config/domain_type.py", line 115, in _misc
    self.environment[osetupcons.ConfigEnv.STORAGE_TYPE]
KeyError: 'NFS'
2013-08-30 11:15:21 ERROR otopi.context context._executeMethod:142 Failed to execute stage 'Misc configuration': 'NFS'