Fix machine service unit tests. (#413)
Fix machine service unit tests. (#413)

Test logs for one specific image, to avoid logs of another image.
Gentux/nanocloud,romain-ortega/nanocloud,Gentux/nanocloud,Nanocloud/nanocloud,Nanocloud/nanocloud,corentindrouet/nanocloud,Leblantoine/nanocloud,Nanocloud/nanocloud,romain-ortega/nanocloud,Gentux/nanocloud,Gentux/nanocloud,Leblantoine/nanocloud,Gentux/nanocloud,romain-ortega/nanocloud,Leblantoine/nanocloud,romain-ortega/nanocloud,Gentux/nanocloud,corentindrouet/nanocloud,Gentux/nanocloud,Nanocloud/nanocloud,corentindrouet/nanocloud,Leblantoine/nanocloud,corentindrouet/nanocloud,Nanocloud/nanocloud,Leblantoine/nanocloud,corentindrouet/nanocloud,Leblantoine/nanocloud,Nanocloud/nanocloud,romain-ortega/nanocloud,romain-ortega/nanocloud,Gentux/nanocloud,Nanocloud/nanocloud,romain-ortega/nanocloud,Leblantoine/nanocloud,Nanocloud/nanocloud,corentindrouet/nanocloud,romain-ortega/nanocloud,corentindrouet/nanocloud,corentindrouet/nanocloud,Leblantoine/nanocloud