Merge pull request #38 from VictorLowther/pull-req-master-fda77fb192c9c1d39e5891586544cf031c6d65bf

https://github.com/crowbar/barclamp-ntp/pull/38

Merged by devtool for cloudedge
Add explicit dependency on dns-client to ntl-client.
Don't try to install ntpd if it is already installed.
Use node.normal instead of node.set.
Add server flag to ntp-server role.
Whitespace cleanup
Merge pull request #39 from VictorLowther/pull-req-master-adf59d76e7c4525496432dae4e35f36b067b56c2

https://github.com/crowbar/barclamp-ntp/pull/39

Merged by devtool for cloudedge