Add volume-api project. Close git pull requests and configure zuul to
build this project using netconn-api-20 as the example config.
Change-Id: I9d8e48120e25d6a28c51c0fcfba1c422560cff00
Reviewed-on: https://review.openstack.org/12387
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: Monty Taylor <mordred@inaugust.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Tested-by: Jenkins