Changelog: Clarify usage guidelines for the properties
Moves the policy from to the changelog.
It is a temporary solution, ideally the behavior should be documented
@@ -7,6 +7,11 @@ Release date: 2018-12-05
* [JENKINS-20679](https://issues.jenkins-ci.org/browse/JENKINS-20679) -
Plugin POM now produces `Minimum-Java-Version` entry in the plugin manifest
+ * `java.level` property value is used by default
+ * `plugin.minimumJavaVersion` property can be used to override the default value, e.g. for Java 11 experimental releases
+ ([JEP-211](https://github.com/jenkinsci/jep/tree/master/jep/211))
+ * **WARNING:** The override should not be used to define higher versions that the Jenkins core requirement
+ until [JENKINS-55048](https://issues.jenkins-ci.org/browse/JENKINS-55048) is released and widely adopted
* [JENKINS-20679](https://issues.jenkins-ci.org/browse/JENKINS-20679) -
Update to Maven HPI Plugin 3.0
([changelog](https://github.com/jenkinsci/maven-hpi-plugin#30-2018-12-05))
