Updated openstack/openstack
Project: openstack/ceilometer  6cee8a3d2ea143c4bd3ff127f28a6707953eee4b

Correct JSON-based query examples in documentation

Need to formulate GET query parameters in JSON, but "-d" in curl implies
a POST request.

Change-Id: I71a8204282ff88b07a9dfdde3f3812e7073acc33
Closes-bug: 1362591