Added basic tests for custom logging interface
Added basic tests for custom logging interface

kyork-cl/zetta,eclub-sense/zetta,DhruvKumar/zetta,DhruvKumar/zetta,eclub-sense/zetta2.0-runtime,Vam85/zetta,eclub-sense/zetta2.0-runtime,zettajs/zetta,eclub-sense/zetta,Vam85/zetta,kyork-cl/zetta,zettajs/zetta