Fix stonith, action and stonith-enabled properties for corosync

- openstack/corosync class is not an appropriate place to configure
stonith behavior, use cluster/fencing* instead.
- stonith-enabled property should be set to true only after
all stonith resources was configured, otherwise none
resources would be allowed to start.
- do not use default stonith-action property, use params for fencing
resources instead

Change-Id: I68e94fcf9d6424fea21dce27dd2bbaa0c07cd460
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>