Indra on Java11 container

[leonardossz]

Building OCI container with maven jib plugin for java 11

• Spotify docker-maven-plugin removed, google jib maven plugin is used instead
• lots of simplifications in maven configuration, like no need of building a tar.gz dist anymore, this was a requirement to build the image with the former docker-maven-plugin
• now some configuration options can be overridden through maven profiles
• java 11 is used as the base image
• mvn clean package builds a docker image as before
• mvn clean package jib:build builds and push to the repo (if credentials are in place)