libvirt: allows attach and detach from all domains

Previously attaching/detaching from a shutoff domain would fail.

Fixes bug 1057730

Change-Id: I876872700da125cb078746401b1b80da265880ff

nova/tests/fakelibvirt.py

@@ -69,8 +69,11 @@ VIR_DOMAIN_SHUTOFF = 5
 VIR_DOMAIN_CRASHED = 6
 
 VIR_DOMAIN_XML_SECURE = 1
+
 VIR_DOMAIN_UNDEFINE_MANAGED_SAVE = 1
 
+VIR_DOMAIN_AFFECT_CURRENT = 0
+
 VIR_CPU_COMPARE_ERROR = -1
 VIR_CPU_COMPARE_INCOMPATIBLE = 0
 VIR_CPU_COMPARE_IDENTICAL = 1
@@ -334,11 +337,17 @@ class Domain(object):
         self._def['devices']['disks'] += [disk_info]
         return True
 
+    def attachDeviceFlags(self, xml, _flags):
+        self.attachDevice(xml)
+
     def detachDevice(self, xml):
         disk_info = _parse_disk_info(etree.fromstring(xml))
         disk_info['_attached'] = True
         return disk_info in self._def['devices']['disks']
 
+    def detachDeviceFlags(self, xml, _flags):
+        self.detachDevice(xml)
+
     def XMLDesc(self, flags):
         disks = ''
         for disk in self._def['devices']['disks']: