Description of problem:
When virt-who run at rhevm mode, virt-who will send the host's defined name other than real hostname to satellite

Version-Release number of selected component (if applicable):
Satellite6.2.7
virt-who-0.17-10.el6sat.noarch
rhevm3.6.10.2-0.2.el6

How reproducible:
Always

Steps to Reproduce:
1. Configure virt-who run at rhevm mode and send host's hostname to satellite
[root@hp-z220-13 virt-who.d]# cat /etc/virt-who.d/rhevm 
[test-rhevm1]
type=rhevm
server=https://ibm-hs22-04.lab.bos.redhat.com:443
username=admin@internal
password=redhat
owner=org1
env=Library
rhsm_username=admin
rhsm_password=admin
rhsm_hostname=hp-bl460cg5-01.rhts.eng.bos.redhat.com
rhsm_port=443
rhsm_prefix=/rhsm
rhsm_proxy_hostname=aaaa
hypervisor_id=hostname

2. In rhevm webUI, register two hosts to rhevm, the first one's hostname is hp-z220-05.qe.lab.eng.nay.redhat.com and the other one is hp-z220-13.qe.lab.eng.nay.redhat.com
 [root@hp-z220-05 yum.repos.d]# hostname
hp-z220-05.qe.lab.eng.nay.redhat.com
 [root@hp-z220-13 yum.repos.d]# hostname
hp-z220-13.qe.lab.eng.nay.redhat.com

3. In rhevm webUI, Update the hp-z220-05.qe.lab.eng.nay.redhat.com's name to "test_name", please see screenshot in attachment update_hostname.jpeg

4. Restart virt-who service and check virt-who's log.
 [root@hp-z220-13 yum.repos.d]# service virt-who restart && tail -f /var/log/rhsm/rhsm.log
[root@hp-z220-13 virt-who.d]# service virt-who restart
Stopping virt-who:                                         [  OK  ]
Starting virt-who:                                         [  OK  ]
2017-01-12 19:54:53,093 [virtwho.main DEBUG] MainProcess(9958):MainThread @subscriptionmanager.py:hypervisorCheckIn:195 - Host-to-guest mapping: {
    "hp-z220-13.qe.lab.eng.nay.redhat.com": [
        {
            "guestId": "aa8dc538-61ef-4742-88db-fdbce9a97641", 
            "state": 1, 
            "attributes": {
                "active": 1, 
                "virtWhoType": "rhevm"
            }
        }
    ], 
    "test_name": []   ====> It's the defined name
}


Actual results:
Virt-who send host's defined name to satellite.

Expected results:
Virt-who should send the real hostname to satellite other than defined name. in the example, virt-who should send "hp-z220-05.qe.lab.eng.nay.redhat.com" other than "test_name" to satellite. 

Additional info: