Avoid using privileged ports in helm charts

[cutwater]

At the moment Kamu API and Kamu Web UI charts (in deployments and services) use privileged ports (<1024) to listen for incoming traffic. Usage of privileged ports doesn't seem to be necessary and in general discouraged, since it requires additional privileges that may not be allowed on a target cluster.

Action items:

• Use ports >1024 in deployment and service resources.