The reason for introducing this script is to be able
to launch ovsdb-server and initialize it (create external bridge and plug
external interface) in one shot. It is applicable ONLY to Kubernetes environment
and it is required for Kubernetes DaemonSet usage. The behavior in classical
Kolla has not been changed.

TrivialFix

Change-Id: I54897cc2c0f2bcaaf0411822f3409bf96e92833d