Add yard documentation markup to DNS plugins
Added management daemon for Avahi based MDNS service
Added Avahi based DNS plugin
Missed the ssh keyname handling in the show method
Merge pull request #1587 from kraman/avahi

Merged by openshift-bot
Merge pull request #1582 from markllama/docs/dns_plugins

Merged by openshift-bot
Merge pull request #1593 from abhgupta/abhgupta-dev

Missed the ssh keyname handling in the show method