Move glace's swift config to lib/glance

Change-Id: Icbb355c15bfffe17725ea5cc64cfa5e76c1e74e6
Merge branch 'swift-init-split' into dt-test
Merge branch 'nova-api-revert' into dt-test
Merge branch 'openrc-stackenv' into dt-test
Merge branch 'glance-swift-conf' into dt-test