Low: IPaddr2: Document IPv6 usage
Low: ManageVE: do not log errors every time the resource is stopped
Merge pull request #219 from davidvossel/ipv6_documentation

Low: IPaddr2: Document IPv6 usage
High: nfsserver: Add systemd unit-file support when init scripts are not present
Merge pull request #224 from davidvossel/nfs_init_improvements

High: nfsserver: Add systemd unit-file support when init scripts are not present