Fix founder attribute to be a boolean, not a string
Ensure that pacemaker-cluster-member nodes are not marked as founders

Just as a safety net to protect against users doing weird things, we
override the pacemaker.founder attribute to false for non-founders.
Remove tests to skip writing authkey file

This really shouldn't be needed: chef will not write the files if they
already have the right content, and if they don't, we want chef to write
the files.