missing traits for authenticate event

[Steve Martinelli]

When looking at the event list, i am only seeing the 'service' trait for the identity.authenticate events:

+---------+--------+-------------------+
| name | type | value |
| +---------+--------+-----------------+
| service | string | identity.ubuntuvm |
| +---------+--------+-------------------+

However, the authentication definition has a lot more info:
https://github.com/openstack/ceilometer/blob/master/etc/ceilometer/event_definitions.yaml#L166-L197

The event from a keystone point of view is:

{
    "priority": "INFO",
    "event_type": "identity.authenticate",
    "timestamp": "2015-04-02 07:03:34.617865",
    "publisher_id": "identity.ubuntuvm",
    "payload": {
        "typeURI": "http://schemas.dmtf.org/cloud/audit/1.0/event",
        "initiator": {
            "typeURI": "service/security/account/user",
            "host": {
                "agent": "python-keystoneclient",
                "address": "10.0.2.15"
            },
            "id": "f98ad817b4214ffbbfc949110f6778ec"
        },
        "target": {
            "typeURI": "service/security/account/user",
            "id": "openstack:2c3c8a0d-f2e7-478f-adc0-318b4c45d55f"
        },
        "observer": {
            "typeURI": "service/security",
            "id": "openstack:af432b8f-574c-4efd-b938-8016dda6e874"
        },
        "eventType": "activity",
        "eventTime": "2015-04-02T07:03:34.617598+0000",
        "action": "authenticate",
        "outcome": "success",
        "id": "openstack:73ff614f-29c7-4d1e-8d8b-cb1094f96ffd"
    },
    "message_id": "b63c9837-a42e-481e-962a-f62c9b86825d"
}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/170193

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/170193
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=a249b629db590615c2a4a64529fb9bd0819e17d8
Submitter: Jenkins
Branch: master

commit a249b629db590615c2a4a64529fb9bd0819e17d8
Author: Steve Martinelli <email address hidden>
Date: Thu Apr 2 12:06:11 2015 -0400

    Tweak authenticate event definition

    The event definition for an authenticate event is simply:
      identity.authenticate

    there is no trailing period.

    Change-Id: Ie9c3fd66abea2b02411e6f3a01051f59a94bf284
    Closes-Bug: 1439538