Adding compatibility support for the Havana dashboard

fixes OS-243

Updating the cobalt-horizon plugin so that it is compatible with
the Havana dashboard.

Change-Id: Ice49058ff9aa8f49e1af11b0065729ac6b8ee325
Merge 'Havana dashboard compatibility support (OS-243)' into havana/1.5

Change-Id: Id2f495e1a9642245b099a89f776af0e1968b19f0