ceph: add support to create system user for createuser api
ceph: add support to create system user for createuser api

Currently this is no way to create user with system permission in objectstore.
Add support for the same

Signed-off-by: Jiffin Tony Thottan <c5f636a65220e122633e16282ed0de93ac96a4fd@redhat.com>

rook/nfs,rook/rook,rook/rook,rook/rook,rook/rook,rook/rook,rook/nfs,rook/nfs