Adding the correlation id in the request headers to glance

Registered by Aditi Raveesh

Create a unified request identifier associated with an API request that crosses OpenStack service boundaries. This will enable more effective debugging of requests that span multiple services. For example, a Nova instance create request may touch other services including Glance and Quantum. A single id will simplify the process of tracking down errors.

See related email discussion: https://lists.launchpad.net/openstack/msg13082.html

This change will add the correlation id to the request headers when the client talks to glance

Blueprint information

Status:
Not started
Approver:
None
Priority:
Undefined
Drafter:
None
Direction:
Needs approval
Assignee:
None
Definition:
New
Series goal:
None
Implementation:
Unknown
Milestone target:
None

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Gerrit topic: https://review.openstack.org/#q,topic:bp/cross-service-request-id,n,z

Addressed by: https://review.openstack.org/68524
    Return request IDs for API calls

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