Add an oslo-config cli utility

Registered by Mark McLoughlin

When oslo-config is released as a separate package, it can include a little CLI utility for querying and setting CLi values in a config file.

See e.g. https://github.com/fedora-openstack/openstack-utils/blob/master/utils/openstack-config

Blueprint information

Status:
Started
Approver:
Mark McLoughlin
Priority:
Low
Drafter:
Mark McLoughlin
Direction:
Needs approval
Assignee:
Mark McLoughlin
Definition:
Approved
Series goal:
None
Implementation:
Started
Milestone target:
None
Started by
Mark McLoughlin

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