- Keystone
- Glance
- Nova
- Cinder

This will copy only yaml or json policy file if they exist.

Change-Id: I4a9415d82322aed68c9b7650bdf346f58fa49e2a
Implements: blueprint support-custom-policy-yaml
Co-authored-By: Duong Ha-Quang <duonghq@vn.fujitsu.com>