Changed header from LLC to Foundation based on trademark policies

Fixes: Bug 1214176

Change-Id: I4e394c33d810fe7d48066ff7cb6143f7eae25f13
Remove unused method setup_logging

Method setup_logging in glance/common/config.py wasn't used anywhere.
Similar function is in oslo, and some modules in Glance are using
function log.setup from oslo, like glance/cmd/manage.py#L123

Closes-Bug: #1248214

Change-Id: Icda26943f02df5e495179868aa8b1f4c4e151803
Merge "Changed header from LLC to Foundation based on trademark policies"
Merge "Remove unused method setup_logging"