notification registration log should be debug

[Brant Knudson]

When the Keystone server starts, there's several log messages:

2014-08-31 12:45:24.686 INFO keystone.notifications [-] Callback: `keystone.token.provider.Manager._trust_deleted_event_callback` subscribed to event `identity.OS-TRUST:trust.deleted`.
...

I can't think of a reason why an administrator would find it necessary to know that some internal callback registrations occurred. If somebody is, they can use logging configuration to enable it.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/118054

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/118053
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=7ce8d7e53125c21e0fb834a8e04c953b17342e4c
Submitter: Jenkins
Branch: master

commit 7ce8d7e53125c21e0fb834a8e04c953b17342e4c
Author: Brant Knudson <email address hidden>
Date: Sun Aug 31 12:50:12 2014 -0500

    Lower log level for notification registration

    Registering an internal notification isn't something that an admin
    would generally be interested in, and if they are they can configure
    debug logging for keystone.notifications.

    Closes-Bug: #1363704

    Change-Id: Id7cd3bf2e1f373b818329978553eb53af399386c

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/118054
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=74699c67adb8228c8a763ef6861c657c42e45be7
Submitter: Jenkins
Branch: master

commit 74699c67adb8228c8a763ef6861c657c42e45be7
Author: Brant Knudson <email address hidden>
Date: Sun Aug 31 12:55:58 2014 -0500

    General logging cleanup in keystone.notifications

    There was an error message that wasn't translated.

    Related-Bug: #1363704

    Change-Id: Icdc21029c62e2b4b7fcb9b6853eac165175fe96a