use --wait with crm node maintenance/ready to avoid races

https://mailman.suse.de/mailman/private/ha-devel/2014-May/003603.html
(sorry - SUSE internal-only mailing list; but thread available on request)
use --wait with crm resource start/stop to avoid races

https://mailman.suse.de/mailman/private/ha-devel/2014-May/003603.html
(sorry - SUSE internal-only mailing list; but thread available on request)