[R1.20-build-46-Upgrade] Vrouter in intializing state as the connection to dns is not established

[Ignatious Johnson Christopher]

contrail-vrouter-agent in initializing state after upgrade from 1.06-build82(havana) to 1.20 build46(icehouse) as the connection to dns is not established.

dicovery-log
============
10.119.226.55 - - [2014-10-15 14:37:26] "POST /heartbeat HTTP/1.1" 200 121 0.007391
10.119.226.55 - - [2014-10-15 14:37:28] "POST /heartbeat HTTP/1.1" 200 121 0.008291
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/bottle.py", line 764, in _handle
    return route.call(**args)
  File "/usr/lib/python2.7/dist-packages/bottle.py", line 1575, in wrapper
    rv = callback(*a, **ka)
  File "/usr/lib/python2.7/dist-packages/discovery/disc_server.py", line 333, in error_handler
    return func(*args,**kwargs)
  File "/usr/lib/python2.7/dist-packages/discovery/disc_server.py", line 557, in api_subscribe
    # find least loaded instances
  File "/usr/lib/python2.7/dist-packages/discovery/disc_server.py", line 480, in service_list
  File "/usr/lib/python2.7/dist-packages/discovery/disc_server.py", line 467, in service_list_fixed
    self._debug['policy_fi'] += 1
  File "/usr/lib/python2.7/dist-packages/discovery/disc_server.py", line 467, in <lambda>
    self._debug['policy_fi'] += 1
KeyError: 'sequence'
10.119.226.55 - - [2014-10-15 14:37:30] "POST /subscribe HTTP/1.1" 500 890 0.009611

contrail-status
== Contrail vRouter ==
supervisor-vrouter: active
contrail-vrouter-agent initializing
contrail-vrouter-nodemgr active

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/3830
Committed: http://github.org/Juniper/contrail-controller/commit/9cd6abaf5457f0b69b07c2af2ed575d247edeaa1
Submitter: Zuul
Branch: R1.10

commit 9cd6abaf5457f0b69b07c2af2ed575d247edeaa1
Author: Deepinder Setia <email address hidden>
Date: Wed Oct 15 15:37:31 2014 -0700

bug 1381704 - update cassandra db with sequence when upgrading from earlier version

Change-Id: Ic39a4e1fc46c5259f3a5de69e778ac1352dc034d

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/3802
Committed: http://github.org/Juniper/contrail-controller/commit/647cea2f7fab9eb9393ea1ab7582c2ba9b3748c4
Submitter: Zuul
Branch: master

commit 647cea2f7fab9eb9393ea1ab7582c2ba9b3748c4
Author: Deepinder Setia <email address hidden>
Date: Wed Oct 15 15:37:31 2014 -0700

bug 1381704 - update cassandra db with sequence when upgrading from earlier version

Change-Id: Ic39a4e1fc46c5259f3a5de69e778ac1352dc034d