Gnocchi uses deprecated dipatcher

[Sumant Murke]

While Installing Gnocchi and Ceilometer in devstack. By default gnocchi uses deprecated dispatcher configuration

gnocchi/devstack/plugin.sh

function configure_ceilometer_gnocchi {
    gnocchi_url=$(gnocchi_service_url)
    iniset $CEILOMETER_CONF DEFAULT dispatcher gnocchi
    ......

Due to this the events from ceilometer are sent to gnocchi and not stored in database. As gnocchi doesn't handle any events hence
Ceilometer event-list always returns empty

Gnoochi should be using meter_dispatchers for configuration.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/255009

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/255009
Committed: https://git.openstack.org/cgit/openstack/gnocchi/commit/?id=2dbd0e2c6e1ed9a859345ee0226595098138f0cb
Submitter: Jenkins
Branch: master

commit 2dbd0e2c6e1ed9a859345ee0226595098138f0cb
Author: Sumant Murke <email address hidden>
Date: Tue Dec 8 22:02:45 2015 +0000

    Resolving use of deprecated dispatcher configuration

    Updated plugin.sh file by resolving configuration changes for
    meter_dispatchers in devstack.

    Change-Id: Icb6bb613eb5cdad98785e8a176f44d78233cf12b
    Closes-Bug: 1524072