python-contrail requires amqp and kombu python packages

When contrail-analytics is provisioned in separate host, contrail-alarm-gen fails to come up
because of dependency issue in python-contrail package

root@a5s193:~# contrail-status
== Contrail Analytics ==
supervisor-analytics: active
contrail-alarm-gen failed
contrail-analytics-api initializing (UvePartitions:UVE-Aggregation[None] connection down)
contrail-analytics-nodemgr active
contrail-collector active
contrail-query-engine active
contrail-snmp-collector active
contrail-topology active

   module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python2.7/dist-packages/opserver/alarmgen.py", line 47, in <module>
    from alarmgen_config_handler import AlarmGenConfigHandler
  File "/usr/lib/python2.7/dist-packages/opserver/alarmgen_config_handler.py", line 12, in <module>
    from config_handler import ConfigHandler
  File "/usr/lib/python2.7/dist-packages/opserver/config_handler.py", line 10, in <module>
    from cfgm_common.vnc_kombu import VncKombuClient
  File "/usr/lib/python2.7/dist-packages/cfgm_common/vnc_kombu.py", line 5, in <module>
    import amqp.exceptions
ImportError: No module named amqp.exceptions
Traceback (most recent call last):
  File "/usr/bin/contrail-alarm-gen", line 9, in <module>
    load_entry_point('opserver==0.1dev', 'console_scripts', 'contrail-alarm-gen')()
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 558, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2682, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2355, in load
    return self.resolve()
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2361, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python2.7/dist-packages/opserver/alarmgen.py", line 47, in <module>
    from alarmgen_config_handler import AlarmGenConfigHandler
  File "/usr/lib/python2.7/dist-packages/opserver/alarmgen_config_handler.py", line 12, in <module>
    from config_handler import ConfigHandler
  File "/usr/lib/python2.7/dist-packages/opserver/config_handler.py", line 10, in <module>
    from cfgm_common.vnc_kombu import VncKombuClient
  File "/usr/lib/python2.7/dist-packages/cfgm_common/vnc_kombu.py", line 7, in <module>
    import kombu
ImportError: No module named kombu