Configure deployment to Eclipse Foundation infrastructure

We release an update site that is deployed to https://download.eclipse.org/trace4cps/ (products, update site)

The deployment needs to be automated in Maven, supporting different types of builds and deployments. There are different types of builds:

• Development builds, for commits / pull requests
• Integration builds, e.g. nightly/weekly
• Milestone builds, for release milestones
• Release candidate builds, for release candidates
• Release builds, for releases

This needs to be set up for our Maven build and with the Jenkins build server.