This patch adds a workload which boots VMs with the following specifications.
1. On non-NFV compute nodes : 1 port in a tenant network, 1 port in a provider network
2. On DPDK compute nodes: 1 SR-IOV/tenant network port, 1 DPDK port
3. On OvS Hardware Offload compute nodes: 1 SR-IOV/tenant network port, 1 Hardware Offload port
Change-Id: I76d468c333f919219db9525f0df2ac911f1a719f