Fix: crmd: Remove state of unknown nodes with conflicting unames from CIB
Fix: cluster: Remove unknown offline nodes with conflicting unames from node cache

Only if nodelist is not configured in corosync.conf
Fix: membership: Prevent use-after-free in reap_crm_member()
Fix: attrd: Remove offline nodes from node cache for "peer-remove" requests
Merge pull request #553 from gao-yan/remove-unknown-conflicting-node

Remove unknown offline nodes with conflicting unames