The configFile path shouble be /etc/glance/glance-api.conf,
not default /etc/glance/glance.conf defined by helm-toolkit,
since secrets mounted in '/etc/glance' have glance-api.conf not glance.conf in it.
The wrong path '/etc/glance/glance.conf' would be a dir in bootstarp container,
and lead to all config files in /etc/glance dir unreachable.
This bug may not affect bootstrap,
but should be fixed in case the config files are needed.
Change-Id: If25966e07ca7f9a80dd0e76ff7663a945db66a23
9f8d417b5d