High: cman: Don't call fenced_join and fenced_leave when notifying cman of a fencing event.
These functions are used to ask fenced to join and leave a domain and not to connect to fenced.
The connection to fenced is already handled by fenced_external.

Mercurial revision: 8f4a92b51e16bd934426be85fc1bcb5b59a04c4b