PluginDescriptorGenerator doesn't generate component requirements for MojoDescriptor.getRequirements()

The part that generates the <requirements> section for a mojo in PluginDescriptorGenerator, only includes requirements for components, if they are specified via a parameter with expression=${component.*}, not if it is actually specified as a required component using the <components> element.

I have created a patch, which includes the ComponentRequirements as requirements when generating the <requirements> element.

Until released, the following workaround can be used in the module.mojos.xml, to get the required component in the plugin.xml:

        <parameter>
          <name>workaroundForPathTransformer</name> 
          <required>true</required> 
          <expression>${component.org.apache.maven.project.path.PathTranslator}</expression>
          <type>org.apache.maven.project.path.PathTranslator</type>
          <description>This is a workaround to get the PathTransformer as a Requirement in the plugin.xml.</description>
        </parameter>