Implemented nic_vlans tag

cloudcontrol/node/hypervisor/domains/vm_tags.py

@@ -15,6 +15,7 @@
 
 
 import logging
+import itertools
 from functools import wraps
 from xml.etree import cElementTree as et
 from StringIO import StringIO
@@ -197,6 +198,15 @@ def nic(dom):
     return u' '.join(map(str, xrange(len(dom.nics)))) or None
 
 
+@ttl(10)
+@refresh(10)
+@_vir_tag
+def nic_vlans(dom):
+    """VM network interfaces."""
+    vlans = set(itertools.chain(*[x.vlans for x in dom.nics]))
+    return u' '.join(str(x) for x in sorted(vlans)) or None
+
+
 @refresh(10)
 @_vir_tag
 def autostart(dom):