OptaPlanner 8.x parent pom

Requirements:

• do not include junit 4
  • also fixes duplicate classes of hamcrest
• do not manage versions of transitive dependencies
• do not manage versions of unused dependencies
• make it easy to upgrade spring, hibernate, maven, etc
• continue to use all 7.x enforcer rules, but sanitize unused exceptions (such as gwt)
• Use rev api, formatter, findbugs etc
• do not manage versions of unused plugins
• upgrade all plugin versions
• improve build speed
  • Which plugins slow down the build?
• Streamline with Quarkus (Quarkus first, Spring second)
• release optaplanner-bom 8
• seperate parent from build-parent which includes dependencies (follow quarkus approach)
• make it maintainable, so make the versions upgradable easily (= - do not manage versions of transitive dependencies)
• Drop OSGi support (The next Camel series, Camel 3, doesn't need it any more)
• (not in scope right now, under discussion) Minimum JAVA 11 in 8.X