Implement memory.util meter in ceilometer

Registered by machao

By default, ceilometer-compute-agent collects metric memory.usage for
memory type metric of nova instances,but those instances are created with
different nova flavor quota. So memory.usage may be less usefull in most
application scenaria when comprerad to memory.util.
It is suggested to add memory utilization meter which uses percentage represents
memory utilization status.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
machao
Direction:
Needs approval
Assignee:
machao
Definition:
Obsolete
Series goal:
None
Implementation:
Unknown
Milestone target:
None
Completed by
gordon chung

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we don't use blueprints. can you create as a wishlist bug instead. that said, does libvirt provide utilisation details? if not, i suggest you implement this in gnocchi rather than as a transfomer. -- gordc (2018-01-24)

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