Comment 7 for bug 1479775

Reviewed: https://review.openstack.org/484257
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=50f39e00445aaa1424f1d3f747258f4ded024472
Submitter: Jenkins
Branch: master

commit 50f39e00445aaa1424f1d3f747258f4ded024472
Author: Hangdong Zhang <email address hidden>
Date: Mon Jul 17 14:00:50 2017 +0800

    Docs: update the path of "meters.yaml" and its new feature

    The file has been moved from ceilometer/meter/data/meters.yaml to
    ceilometer/data/meters.d/meters.yaml, in order to support loading
    multiple meter definition files.

    So I think it is necessary to update the info in doc.

    Change-Id: I6e2dbe36cd6a3cf2c198dfbdffe696a954a57820
    Related-Bug: #1479775