[Bug 1516085] Re: quotas calls fail when CONF.keymgr.encryption_auth_url is not configured

[James Page]

Ubuntu SRU information

[Impact]
Quota operations fail unless the auth URL for key management is set in the cinder.conf file.

[Test Case]
Deploy OpenStack Liberty
cinder quota-show <tenant-id>
ERROR: The server has either erred or is incapable of performing the requested operation. (HTTP 500) (Request-ID: req-57d9c37b-56a1-47de-beb3-4a8b3de1d7e4)

[Regression Potential]
Minimal; fix is upstream in development and stable branches

** Changed in: cinder (Ubuntu Wily)
     Assignee: (unassigned) => James Page (james-page)

** Changed in: cinder (Ubuntu Xenial)
     Assignee: (unassigned) => Corey Bryant (corey.bryant)

** Changed in: cinder (Ubuntu Wily)
       Status: Triaged => In Progress

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https://bugs.launchpad.net/bugs/1516085

Title:
  quotas calls fail when CONF.keymgr.encryption_auth_url is not
  configured

Status in Cinder:
  Fix Committed
Status in Cinder liberty series:
  Fix Committed
Status in Cinder mitaka series:
  Fix Committed
Status in cinder package in Ubuntu:
  Triaged
Status in cinder source package in Wily:
  In Progress
Status in cinder source package in Xenial:
  Triaged
Status in cinder package in Juju Charms Collection:
  In Progress

Bug description:
  Quotas calls fail when aforementioned option is not configured and our
  Keystone host is somewhere else than c-api's host. This is due to the
  fact that the option defaults to localhost's Keystone v3.

  To fix we would need to modify:

  https://github.com/openstack/cinder/blob/master/cinder/api/contrib/quotas.py#L183

  We're using the config option instead of working with service catalog
  (available in RequestContext) to find proper Keystone endpoint.

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