Add missing ipolicy field

This was missing so far…

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

htools/Ganeti/Objects.hs

@@ -409,6 +409,7 @@ $(buildParam "ISpec" "ispec"
   , simpleField C.ispecDiskSize    [t| Int |]
   , simpleField C.ispecDiskCount   [t| Int |]
   , simpleField C.ispecCpuCount    [t| Int |]
+  , simpleField C.ispecNicCount    [t| Int |]
   , simpleField C.ispecSpindleUse  [t| Int |]
   ])