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This spec proposes the initial design for the cyborg api. The cyborg api should support the basic operations concerning accelerators, and does not necessarily have to be user facing api at the early stage.The api should support functionalities such as provision, attach, detach, list and update. This spec also contains the proposal for a simple DB for Cyborg. Note that although we propose a DB schema for Cyborg, in implementation it should be aligned with resource provider db schema as much as possible. APIImpact Change-Id: I98c74df91f4548ecef42d2e3f96facf9023a346a Signed-off-by: zhipengh <huangzhipeng@huawei.com>