This should be merged into dpset...
Based on the following patch:
From: Isaku Yamahata <yamahata@valinux.co.jp>
Subject: controller/switch_conf: introduce a class to manage per-switch configuration
For tunnel application and generally, it is necessary to associate
configurations to each switches. Such as tunnel port ip address for each
switches.
So introduce a helper class to manage those configurations.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
