Fix /var/log/glance/api.log permissions during upgrade

We've running glance db_sync under glance user in later releases,
and it can't access to api.log created by glance db_sync launched from
root. This patch corrects api.log permissions

Change-Id: I727db1b727dc4e6a99ae312774fad7eca92ff9ef
Related-Prod: PROD-27222
1 file changed