add v3 extension api

Registered by wanghong

Extension api lets user to know which extensions are enabled in current system. Currently, we only have v2 api. However, v2 api would go away anyway. We should implement this api in v3.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
wanghong
Direction:
Needs approval
Assignee:
wanghong
Definition:
Obsolete
Series goal:
None
Implementation:
Unknown
Milestone target:
None
Completed by
Morgan Fainberg

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Whiteboard

Extensions are going away in keystone. This is being marked as obsolete.

(?)

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