Description of problem:
============================
So support of multiple rhevm datacenters has been tossed around with the upgrade to deltacloud v0.5, trying to test that out, ran into this issue where aeolus-configure rewrites image factory's rhevm.json file.  We need it to support writi multiple rhevm provider's to the file.

{ 
  "user_selected_name": 
  {
     "nfs-dir": "/home/vdsm/v1", 
     "nfs-path": "/home/vdsm/v1",  
     "nfs-host": "nfs-server.redhat.com", 
     "cluster": "_any_",  
     "api-url": "http://rhevm-server.redhat.com/rhevm-api", 
     "timeout": 1800
  },
  "another_user_selected_name": 
  {
     "nfs-dir": "/home/vdsm/v1", 
     "nfs-path": "/home/vdsm/v1",  
     "nfs-host": "nfs-server.redhat.com", 
     "cluster": "_any_",  
     "api-url": "http://rhevm-server.redhat.com/rhevm-api", 
     "timeout": 1800
  }
}