*Providing utility class for creating the ServiceDescriptor and all
the application creation (Look at the util class <DescriptorUtil> provided
in REST service).*
*saveDeploymentDescription method should jus get a Host and Service
descriptor objects rather passing the names.*
Instead of having single save method for both add and update, we
should have separate methods for those functionalities
*Remove isExist check from the save methods, ideally when we introduce
above add and update functions separately, this will become obsolete.*
Improvement
Major