adds failing test demonstrating a bug with cloned models
adds failing test demonstrating a bug with cloned models

cristoferdomingues/angular-model-factory,mhssmnn/angular-model-factory,alexandr2110pro/angular-model-factory,albohlabs/angular-model-factory-cse,juristr/model-factory,Swimlane/angular-model-factory,mleanos/angular-model-factory,mleanos/angular-model-factory