The first draft version of Vshield Edge LBaaS driver for Quantum LBaaS Service
    1. It includes the CRUD operation on Pool/Vip/Member/Monitor
    2. Since Edge did not use the OVS which Quantum uses, now we have to configure the vip ip on Edge to correspond
       to the vip-ip which Quantum LBaaS service defined
    3. the unit test should be needed in the future