[Orchestrator] - Create unitests for orchestrator

Create a package in orchestrator (eg: testing) where all unit tests about orchestrator should be placed. Follow up: include the tests in the pipeline (discuss how they should be run).

assigned to @oalexa

added PJ1802-0188 label

created branch 70-create-unitests-for-orchestrator to address this issue

mentioned in merge request !73

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changed title from Create unitests for orchestrator to [Orchestrator] - Create unitests for orchestrator

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changed milestone to %FusionDirectory Orchestrator 1.2