Clean up rerun_my_noderoles a bit.
Merge pull request #66 from VictorLowther/pull-req-master-7e4d4af3d6449b9d69d65e99a3e4e9c72ba47979

https://github.com/crowbar/barclamp-dns/pull/66

Merged by devtool for cloudedge
add overlay view for dns-server, fix bug