[MJDEPS-14] Provide a JDEPS report for inclusion within Maven site

**[Lennart Jörelid](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=lennartj)** opened **[MJDEPS-14](https://issues.apache.org/jira/browse/MJDEPS-14?redirect=false)** and commented

While the JDEPs is good to run as a control plugin, it is also really a good structural addition to JDK8 and JDK9 build reactors to harvest information about dependencies between projects/modules. 

The jdeps tool can already emit DOT files - so we can compile those into graphics shown in a report on the maven site. The majority of the work is - hence - already done. However, this requires that graphviz is installed on the computer (similar to the case when generating PlantUML diagrams). Graphviz (or even its constituent application, DOT) ought to be treated like just-another-Toolchain within the plugin.

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1 votes, 2 watchers

Start by locating the plugin's existing jdeps/DOT generation and Maven site-report entry points; the issue names no files or tests. Review how PlantUML handles Graphviz-like external tools, then define the report and toolchain integration. Done means dependency data is rendered as graphics in the Maven site when Graphviz is available.

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