Aggregated javadocs are generated in the following steps:
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1. pom files are generated
   maven invoker plugin runs javadocs-builder/src/it/generate-javadocs-pom-file twice
   generated pom files are copied to
    * javadocs-builder/src/it/generate-ee-javadocs-file for ee-dist
    * javadocs-builder/src/it/generate-javadocs-file for dist

2. javadocs jar files are generated
   maven invoker plugin runs
    * javadocs-builder/src/it/generate-javadocs-file for ee-dist
    * javadocs-builder/src/it/generate-javadocs-file for dist

3. generated javadocs jar files are attached to deployed artifacts
    * see wildfly-ee-aggregate-javadocs/pom.xml for ee-dist
    * see wildfly-aggregate-javadocs/pom.xml for dist

How to use:
-----------
Use -Djavadocs to generate javadocs for both ee-dist and dist
Use -Djavadocs.dist.skip to skip generating javadocs for dist
Use -Djavadocs.ee-dist.skip to skip generating javadocs for ee-dist

