[jboss-jira] [JBoss JIRA] (WFLY-7963) Require Maven 3.3.1+ and introduce mvnw

Require Maven 3.3.1+ and introduce mvnw --------------------------------------- Key: WFLY-7963 URL: https://issues.jboss.org/browse/WFLY-7963 Project: WildFly Issue Type: Task Reporter: Peter Palaga Assignee: Peter Palaga There are three closely related things here: * Maven 3.3.1+ is required by the Enforcer Plugin * mvnw (a.k.a. Maven Wrapper) is a script that downloads and installs (if necessary) the required Maven version to ~/.m2/wrapper and runs it from there. "mvn -N io.takari:maven:wrapper" was used to create all the necessary files. The same command can be used in the future to upgrade to a newer wrapper version. Maven version used by the wrapper is stored in .mvn/wrapper/maven-wrapper.properties * .mvn/jvm.config is a place where Maven 3.3.1+ looks for JVM parameters (memory, etc.) which were traditionally defined in the MAVEN_OPTS environment variable.