Add  create and delete to Jumpgate volume API

    1. Support SL portable storage create operation via jumpdate
    2. Support SL portable storage delete operation via jumpdate
    3. Add unittest coverage for jumpgate volume create/delete

Change-Id: I9cd6acb0832279fdfa5080e728ecaef9ac9de638
@underscorephil I'm curious if you've had the same experience with this. The issue here is that the order itself doesn't return identifier(s) for the object(s) ordered. Therefore, this is polls until the object is available based on the order id (or until it gives up)