Do not delete and re-add the same zone in Brocade driver

Registered by Wilson Liu

Check whether the new zone we want to add/create have the same zone name and members to the existing zone on the switch. If they are same, then no need to delete and re-add it. This is significant if we copy_image_to_volume or copy_volume_to_image in batch.

Blueprint information

Status:
Complete
Approver:
Sean McGinnis
Priority:
Undefined
Drafter:
Wilson Liu
Direction:
Needs approval
Assignee:
Wilson Liu
Definition:
Approved
Series goal:
Proposed for mitaka
Implementation:
Implemented
Milestone target:
milestone icon mitaka-1
Started by
Wilson Liu
Completed by
Wilson Liu

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Gerrit topic: https://review.openstack.org/#q,topic:bp/brocade-add-zone-optimization,n,z

Addressed by: https://review.openstack.org/234004
    Brocade driver add_zone optimization

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