He Jie Xu 8a307bbdf4 placement: support traits in allocation candidates API ... This patch add new query parameter `required` to the `GET /allocation_candidates` API, which is used to filter candidates with required traits. The candidate attached traits return in the provider summary also. Those API changes are added by new microversion. Also using specific exception TraitNotFound instead of the generic exception ValueError when invalid traits in the request. Change-Id: Id821b5b2768dcc698695ba6570c6201e1e9a8233 Implement blueprint add-trait-support-in-allocation-candidates		2018-01-22 22:10:10 +08:00
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source	placement: support traits in allocation candidates API	2018-01-22 22:10:10 +08:00