Fixing hostname vs cpcsubset_name

+ modified hostname to cpcsubset_name
+ removed all the host and hostname variables

Closes-Bug: #1651464

Change-Id: Ia3c1f9db3a3eaa267268cb7e3e2251991ee68603

nova_dpm/tests/unit/virt/dpm/fakecpcs.py

@@ -30,7 +30,7 @@ def getFakeCPC(cpcmanager):
 
 def getFakeCPCconf():
 
-    conf = {'hostname': "S12subset",
+    conf = {'cpcsubset_name': "S12subset",
             'cpc_uuid': "1232132",
             'max_processors': 10,
             'max_memory_mb': 200,

nova_dpm/tests/unit/virt/dpm/test_host.py

@@ -62,5 +62,6 @@ class HostTestCase(TestCase):
 
         host1 = host.Host(conf, cpc, client)
         host_properties = host1.properties
-        self.assertEqual(host_properties['hypervisor_hostname'], 'S12subset')
+        self.assertEqual(host_properties['hypervisor_hostname'],
+                         'S12subset')
         self.assertEqual(host_properties['cpc_name'], 'fakecpc')