Add BIRD local instance a name selection.

Add possibility to set a name of the BIRD router in BirdRouterLocal
object.

src/ulgbird.py

@@ -391,10 +391,10 @@ class BirdRouter(ulgmodel.Router):
                 ]
 
 class BirdRouterLocal(ulgmodel.LocalRouter,BirdRouter):
-    def __init__(self,sock=defaults.default_bird_sock,commands=None,proto_fltr=None,asn='My ASN'):
+    def __init__(self,sock=defaults.default_bird_sock,commands=None,proto_fltr=None,asn='My ASN',name='localhost'):
         ulgmodel.LocalRouter.__init__(self)
         self.sock = sock
-        self.setName('localhost')
+        self.setName(name)
         self.setASN(asn)
         if(proto_fltr):
             self.proto_fltr = proto_fltr