vlan splinters 3.2.1

facts and resources

https://blueprints.launchpad.net/fuel/+spec/ovs-vlan-splinters
https://docs.google.com/a/mirantis.com/document/d/1HLUzMnN0Cv5xn8vMu5bPzmNnVsxz1sp7kI3CdFLI_q0