Fix VMT issue
Currently a dummy VMT is attached to an application component during the application deployment.
The VMT should not influence the deployment process in colosseum, it was meant for scaling actions. However the LANCE client on colosseum side uses the VMT image information to derive the bash handler (https://github.com/cloudiator/colosseum/blob/0fa594709b1b0330da95d83cfcad7481a6d49069/app/deployment/LifecycleComponentToLifecycleStore.java Line 85) In case an Image with the osType UNKNOWN is selected the deployment will fail, hence the current solution adds an UBUNTU image to the VMT.
Windows is therefore not supported and issues with non debian distributions can occur.
Correct fix requires to fix the lance interface and adapt the colosseum code