Enhancement: display-dependency-updates uses maven-versions-rule.xml (rulesUri)

[krallus]

In Maven 3.6.3, using mvn versions:display-dependency-updates lists all dependency updates without taking into consideration the rules listed in maven-versions-rule.xml. This means it cannot serve as a predictor of what will happen mvn versions:use-latest-versions is executed. (use-latest-versions does follow the rule file.).

From pom.xml:

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>versions-maven-plugin</artifactId>
  <version>2.8.1</version>
  <configuration>
    <rulesUri>file:///${session.executionRootDirectory}/maven-versions-rule.xml</rulesUri>
  </configuration>
</plugin>