Chris Dent f7f5231677 Add register_opts param to PlacementFixture
There are scenarios where it is useful to create a ConfigOpts
and register_opts on it before ever calling the PlacementFixture.
If that is done we don't want to re-register the opts within
the fixture as this can lead to errors (especially when CLI
opts are involved).

The scenario that discovered this problem is in nova in a regression
test [1] where a ConfigOpts is created and registered, the placement
DatabaseFixture is started and then that same config is used in
multiple instances of the PlacementFixture, each of which again
register_opts(). Until commit b647919666a451092189f963786e367d0baa82be
this wasn't a problem because the default opts in placement did
not include any CLI options. Adding logging opts brought some in.

This change adds a flag to the constructor for PlacementFixture,
register_opts, defaulting to True, which lets the caller say
no, I don't want do register.

It also reverts the revert of b647919666a451092189f963786e367d0baa82be
to perform oslo_log.log.register_opts() from a central location.

[1] test_bug_1679750.TestLocalDeleteAllocations.test_local_delete_removes_allocations_after_compute_restart

Change-Id: I360a306b5d05ada75274733038b73ec2f2bdc4d4
Needed-By: I042e41ac8c41c0e5f0389904eb548e0e97d54c60
Related-Bug: #1821092
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If you are viewing this README on GitHub, please be aware that placement development happens on OpenStack git and OpenStack gerrit.

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OpenStack Placement

OpenStack Placement provides an HTTP service for managing, selecting, and claiming providers of classes of inventory representing available resources in a cloud.

API

To learn how to use Placement's API, consult the documentation available online at:

For more information on OpenStack APIs, SDKs and CLIs in general, refer to:

Operators

To learn how to deploy and configure OpenStack Placement, consult the documentation available online at:

In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:

Developers

For information on how to contribute to Placement, please see the contents of CONTRIBUTING.rst.

Further developer focused documentation is available at:

Description
OpenStack resource provider inventory allocation service
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