Cinder raw cache feature requires internal tenant id be set in
/etc/cinder/cinder.conf, something like:
cinder_internal_tenant_project_id = b7455b8974bb4064ad247c8f375eae6c
cinder_internal_tenant_user_id = f46924c112a14c80ab0a24a613d95eef
This patch get or create if not exist intenal user id and project id, and then
set in cinder.conf
reference: Cinder cache feature:
https://docs.openstack.org/cinder/latest/admin/blockstorage-image-volume-cache.html
Story: 2004869
Task: 29121
Change-Id: I07954d2efa905a56ca8482d0ec147534c97d01ea
Signed-off-by: Liang Fang <liang.a.fang@intel.com>