Feature: PE: Automatically re-unfence a node if the fencing device definition changes

Ensures all resources that require unfencing are stopped first
If unfencing is enabled, this is the new default for resource.requires
Test: Fix: ACLs are not important for PE regression tests
Fix: PE: Fencing devices default to only requiring quorum in order to start
Fix: PE: Delay unfencing until after we know the state of all resources that require unfencing
Log: acl: The message about enforcing ACLs doesn't need to be so aggressive
Fix: crmd: Correctly react to successful unfencing operations

Hint: We don't want to shut down