[jboss-jira] [JBoss JIRA] (WFLY-13584) Require a minimum of Maven 3.6.0 and default to 3.6.3

Require a minimum of Maven 3.6.0 and default to 3.6.3 ----------------------------------------------------- Key: WFLY-13584 URL: https://issues.redhat.com/browse/WFLY-13584 Project: WildFly Issue Type: Task Components: Build System Reporter: James Perkins Assignee: James Perkins Priority: Major The current minimum Maven version is 3.3.0 which is quite old at this point. A minimum of 3.6.0 should be required with {{mvnw}} defaulting to the latest, 3.6.3. As part of this change we should remove the max heap from the {{.mvn/jvm.config}}. This config is picked up by maven as of 3.3.1 making it hard to override for environments like CI, http://maven.apache.org/configure.html#mvn-jvm-config-file.