Description of problem:
Edit the iso file with a plugin or package, also specify the name by "--name" or "-n", 
it will append the plugin's name to the generated iso, sometimes this is really not what the user want to get.

eg: #edit-node --repo=./igor.repo --install=ovirt-autotesting-sysvinit-20130516-1.gitaffb09f.fc18.noarch -n igor rhev-hypervisor.iso 
it will get igor.ovirt-autotesting-sysvinit-20130516-1.gitaffb09f.fc18.noarch.iso,
just generate igor.iso is much better.

Version-Release number of selected component (if applicable):
ovirt-node-3.0.1-7.el6.noarch

How reproducible:
100%

Steps to Reproduce:
1. 

Actual results:


Expected results: