Updated openstack/openstack
Project: openstack/neutron  c6bc0040f7e09f502d662b3e37a051af20c147b5

Big Switch: Catch exceptions in watchdog thread

Catch and log exceptions in the watchdog greenthread to prevent
them from stopping the periodic consistency checks.

Closes-Bug: #1330135
Change-Id: I6834c0fee0429bb72b8c61307be7bdca77f6de9b