Updated openstack/openstack
Project: openstack/ceilometer  ddc079f35f79a0934b307b06593c8cda54737caf
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Add a note about permissions to ceilometer logging directory

In case of swift monitoring swift needs to init logger for ceilometer.
So it needs to have corresponding permissions on log dir.

Change-Id: I67b4b8e438f7d51dba0575ffaacc0d43ef5040da