/var/daos/daos_server/daos_server.sock has permissions 777, should be 600
/var/daos/daos_server/daos_engine_^pid^.sock has permission 755, should be 600
/var/daos/daos_agent/daos_agent.sock has permissions 777, should be 666

Signed-off-by: Tom Nabarro <tom.nabarro@intel.com>