[MDEP-879] Wanted: analyze-report-only goal

**[Karsten Spang](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=kspang_impala_76b0)** opened **[MDEP-879](https://issues.apache.org/jira/browse/MDEP-879?redirect=false)** and commented

I would like to have a report goal that does not trigger test-compile.
I have several projects using generated sources. Since the sources are re-generated before the compile step, the compiler plugin does not skip over code already compiled. This takes unnecessary time when running `mvn clean verify site`.

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No further details from [MDEP-879](https://issues.apache.org/jira/browse/MDEP-879?redirect=false)

Start by locating the Maven Dependency Plugin implementation of the report goal and its tests; the issue names no files or test entry points. Trace why the report goal triggers test-compile, then determine how a report-only goal would avoid that step while still producing the dependency report. Done means the requested goal works for projects with generated sources and has coverage for the no-test-compile behavior.

Written by the indexing model from the issue text.