[VNC svc-monitor] rabbit.py does not handle NoIdError when it reads/updates an object

[Édouard Thuleau]

svc-monitor.rabbit does not handle NoIdError when it reads/updates an object:

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/svc_monitor/rabbit.py", line 39, in _vnc_subscribe_callback
    self._vnc_subscribe_actions(oper_info)
  File "/usr/lib/python2.7/dist-packages/svc_monitor/rabbit.py", line 70, in _vnc_subscribe_actions
    obj.update()
  File "/usr/lib/python2.7/dist-packages/svc_monitor/config_db.py", line 1154, in update
    obj = self.read_obj(self.uuid)
  File "/usr/lib/python2.7/dist-packages/cfgm_common/vnc_db.py", line 267, in read_obj
    ok, objs = cls._cassandra.object_read(obj_type or cls.obj_type, [uuid])
  File "/usr/lib/python2.7/dist-packages/cfgm_common/vnc_cassandra.py", line 631, in object_read
    raise NoIdError(obj_uuids[0])
NoIdError: Unknown id: ec321c50-2668-4bc1-a91e-7a2375bfa89b

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/21220
Submitter: ?douard Thuleau (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/21220
Committed: http://github.org/Juniper/contrail-controller/commit/26ae352b5470182e6e1008ee8abb09d9ff96cfd1
Submitter: Zuul
Branch: master

commit 26ae352b5470182e6e1008ee8abb09d9ff96cfd1
Author: Édouard Thuleau <email address hidden>
Date: Thu Jun 16 10:57:36 2016 +0200

[VNC svc-monitor] Catch NoIdError when update an object

In case an object was vanished between svc-monitor receives an update and
it tries to fetch it, the common cassandra library raises a NoIdError
exception. This fix handle it and abandon that update notification.

Change-Id: I0b7b8125bbd78862c7b9a54090b341e8a342b49c
Closes-Bug: #1593143