Add CONTRIBUTING.rst

There is no CONTRIBUTING.rst file, the patch will add it.

Change-Id: Ifcdc30b47b5fb668bbca2e974d8cff63a938addb
Add BSN plugin to agent migration script

Adds the Big Switch plugin to the migration script that creates
the agents table. A recent commit (d3be7b040eaa61a4d0ac617026cf5c9132d3831e)
added it to the agent tables but it missed this one so an error was thrown
during migration when it reached a table that depended on the agents table.

Closes-Bug: #1340405
Change-Id: I90a164a1b632c3794a7f7607f3f1da8f7d7b15db
Send network name and uuid to subnet create

Added the network segment name and uuid parameters to the infomation sent to
Cisco N1kV during subnet creation to allow for proper association of the
subnet and network segment.

Change-Id: I375d49ec43f79360189ecf5de0583873b8039db9
Closes-Bug: 1332713
Merge "Send network name and uuid to subnet create"
Merge "Add CONTRIBUTING.rst"
Merge "Add BSN plugin to agent migration script"