title: jaxb2 goal is not invoked
body: <p>I am using maven-jaxb2-plugin to generate some classes from xsd.
  It is defined in child pom as follows:</p>
  
  <pre><code>&lt;pluginManagement&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
                  &lt;configuration&gt;
                      &lt;source&gt;1.6&lt;/source&gt;
                      &lt;target&gt;1.6&lt;/target&gt;
                  &lt;/configuration&gt;
              &lt;/plugin&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.jvnet.jaxb2.maven2&lt;/groupId&gt;
                  &lt;artifactId&gt;maven-jaxb2-plugin&lt;/artifactId&gt;
                  &lt;version&gt;0.8.0&lt;/version&gt;
                  &lt;executions&gt;
                      &lt;execution&gt;
                          &lt;id&gt;jaxb2-generate&lt;/id&gt;
                          &lt;phase&gt;generate-sources&lt;/phase&gt;
                          &lt;goals&gt;
                              &lt;goal&gt;generate&lt;/goal&gt;
                          &lt;/goals&gt;
                      &lt;/execution&gt;
                  &lt;/executions&gt;
                  &lt;configuration&gt;
                      &lt;forceRegenerate&gt;true&lt;/forceRegenerate&gt;
                      &lt;!-- Generate classes from XSD (XML Schema) using JAXB --&gt;
                      &lt;schemaDirectory&gt;src/main/resources/com/reportcenter/settings/&lt;/schemaDirectory&gt;
                      &lt;generatePackage&gt;com.reportcenter.settings&lt;/generatePackage&gt;
                      &lt;schemaIncludes&gt;
                          &lt;include&gt;**/*.xsd&lt;/include&gt;
                      &lt;/schemaIncludes&gt;
                      &lt;strict&gt;false&lt;/strict&gt;
                      &lt;extension&gt;true&lt;/extension&gt;
                      &lt;plugins&gt;
                          &lt;plugin&gt;
                              &lt;groupId&gt;org.jvnet.jaxb2_commons&lt;/groupId&gt;
                              &lt;artifactId&gt;jaxb2-basics&lt;/artifactId&gt;
                              &lt;version&gt;0.6.2&lt;/version&gt;
                          &lt;/plugin&gt;
                          &lt;plugin&gt;
                              &lt;groupId&gt;org.jvnet.jaxb2_commons&lt;/groupId&gt;
                              &lt;artifactId&gt;jaxb2-basics-annotate&lt;/artifactId&gt;
                              &lt;version&gt;0.6.2&lt;/version&gt;
                          &lt;/plugin&gt;
                      &lt;/plugins&gt;
                      &lt;args&gt;
                          &lt;arg&gt;-Xannotate&lt;/arg&gt;
                          &lt;arg&gt;-XtoString&lt;/arg&gt;
                          &lt;arg&gt;-Xcopyable&lt;/arg&gt;
                      &lt;/args&gt;
                  &lt;/configuration&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
      &lt;/pluginManagement&gt;
  </code></pre>
  
  <p>The problem is the jaxb2 is not called from mvn install or mvn compile or mv generate-sources.
  If I call mvn jaxb2:generate (as the name of the goal) the classes are created OK.
  I looked at some questions here and used the answers provided, but I am still missing something.
  Thank you.</p>