Fixups to control.sh to force reliance on and test DNS.
Merge pull request #204 from VictorLowther/pull-req-master-b8895885003093f140e37ed4f5efc36a05f38852

https://github.com/crowbar/barclamp-provisioner/pull/204

Merged by devtool for cloudedge
Don't chattr +i resolv.conf.
Add a dependency on the dns-client role.
Add server flag to provisioner-server role.
Merge pull request #205 from VictorLowther/pull-req-master-adf59d76e7c4525496432dae4e35f36b067b56c2

https://github.com/crowbar/barclamp-provisioner/pull/205

Merged by devtool for cloudedge