heat: ensure admin has heat_stack_owner role

To avoid a bug in Heat [1], ensure "admin" user from "admin" tenant has
"heat_stack_owner" role.

[1] https://bugs.launchpad.net/heat/
Allow to dedicate a journal by OSD.

The device name for an OSD or for a journal can be specified as a
full-qualifed name (eg. /dev/sde) or a short-qualifed device name (eg.
sde).
Merge pull request #707 from enovance/AlexandreNo/ceph_journal_osd

Allow to dedicate a journal by OSD.
Merge pull request #706 from enovance/heat_role

heat: ensure admin has heat_stack_owner role