[DM]: DM crashes if vendor name is configured for any PR

[Suresh Balineni]

DM crashes if PR's vendor name is not configured.

DM auto assigns vendor name to '' only if vendor name is not present in the config object, but UI is setting value to None, and hence DM could not assign vendor name to ''. For this reason, DM crashes. Need to handle gracefully.

Traceback (most recent call last):
  File "/usr/bin/contrail-device-manager", line 9, in <module>
    load_entry_point('device-manager==0.1dev', 'console_scripts', 'contrail-device-manager')()
  File "/usr/lib/python2.7/dist-packages/device_manager/device_manager.py", line 600, in server_main
    main()
  File "/usr/lib/python2.7/dist-packages/device_manager/device_manager.py", line 589, in main
    args)
  File "/usr/lib/python2.7/dist-packages/cfgm_common/zkclient.py", line 344, in master_election
    self._election.run(func, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/kazoo/recipe/election.py", line 48, in run
    func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/device_manager/device_manager.py", line 594, in run_device_manager
    device_manager = DeviceManager(args)
  File "/usr/lib/python2.7/dist-packages/device_manager/device_manager.py", line 251, in __init__
    pr = PhysicalRouterDM.locate(obj['uuid'], obj)
  File "/usr/lib/python2.7/dist-packages/cfgm_common/vnc_db.py", line 64, in locate
    obj = cls(key, *args)
  File "/usr/lib/python2.7/dist-packages/device_manager/db.py", line 125, in __init__
    self.uve_send()
  File "/usr/lib/python2.7/dist-packages/device_manager/db.py", line 730, in uve_send
    product_info=self.vendor + ':' + self.product)
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/22458
Submitter: Suresh Balineni (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/22597
Submitter: Suresh Balineni (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/22598
Submitter: Suresh Balineni (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/22458
Committed: http://github.org/Juniper/contrail-controller/commit/51b93c9e0533ec3d89f1e7bada59775833c8d2ec
Submitter: Zuul
Branch: master

commit 51b93c9e0533ec3d89f1e7bada59775833c8d2ec
Author: sbalineni <email address hidden>
Date: Tue Jul 26 16:34:23 2016 -0700

DM: if vendor name is not configured using UI, DM crashes. Fixed.

Change-Id: I86815593c051acf33df2ac93c3b05790b93478dd
Closes-Bug: #1606729

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/22598
Committed: http://github.org/Juniper/contrail-controller/commit/4d3f81f74faaf9bb30526e79df3e74a64edce821
Submitter: Zuul
Branch: R3.0

commit 4d3f81f74faaf9bb30526e79df3e74a64edce821
Author: sbalineni <email address hidden>
Date: Tue Jul 26 16:34:23 2016 -0700

DM: if vendor name is not configured using UI, DM crashes. Fixed.

Change-Id: I86815593c051acf33df2ac93c3b05790b93478dd
Closes-Bug: #1606729

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/22597
Committed: http://github.org/Juniper/contrail-controller/commit/12551ea6af814e3c41ed7bfe0c9c7b60b08928c9
Submitter: Zuul
Branch: R3.1

commit 12551ea6af814e3c41ed7bfe0c9c7b60b08928c9
Author: sbalineni <email address hidden>
Date: Tue Jul 26 16:34:23 2016 -0700

DM: if vendor name is not configured using UI, DM crashes. Fixed.

Change-Id: I86815593c051acf33df2ac93c3b05790b93478dd
Closes-Bug: #1606729