Add volume API/CLI
Add volume API/CLI

Signed-off-by: Brian Goff <dc73d0991b982a8303e713ef531a313af77e242a@gmail.com>

thaJeztah/engine-api,rhatdan/engine-api,vdemeester/engine-api,docker/engine-api,jwhonce/engine-api,msabansal/engine-api,mikedougherty/engine-api