Fix default configuration files path not exist
Fix default configuration files path not exist

Default configuration files like etc/karbor/karbor.conf and
etc/karbor/policy.json are not exist. api-paste.ini is under
'etc/' path. This patch fix it.

Change-Id: Ia42c434b612a005e8de3a1c975a7819c1877256d

openstack/smaug,openstack/smaug