Description of problem:
=============================
Over the last week I have been trying to get cloud engine to push a image into either a different datacenter or different cluster under the default datacenter but have come to the conclusion that it is not possible at the moment.  The pushes always fail if I use a different datacenter completely or a different cluster within the default datacenter.  

For one, the aeolus-image push command to rhevm provider goes through image factory which creates the following json used to register the image and is hard-coded for "_any_" cluster.

{ 
  "image"   : "target_images/79d2349c-60d8-40b8-8aa8-955811c25efc",
  "apiurl"  : "https://rhevm2.rhq.lab.eng.bos.redhat.com:8548/rhevm-api-powershell",
  "apiuser" : "administrator@rhevm2",
  "apipass" : "password",
  "nfshost" : "10.16.120.18",
  "nfspath" : "/home/dajo/rhevh-export",
  "nfsdir"  : "/mnt/rhevm-nfs",
  "cluster" : "_any_"
}