Since I53cb63ffa4ae50575d4fa37b24323ad13ec1bac3 some puppet runs are
failing because system-config:playbooks/roles/set-hostname moved to
roles/set-hostname and became a symlink. rsync refuses to overwrite
the directory with a symlink because it seems to not be empty, because
we never removed the files in it.
Handle the possibility of things moving around like this by
specifying delete so old files are cleared out.
Finally set manifest_base dir ownership and mode to address linter E208.
Depends-On: https://review.opendev.org/762181
Change-Id: I249d713214d8383a3ccfe1a400404cbdcb97dcc6
e5e1127122