[MSHADE-480] Rebuild problem - old shaded artifact is shaded again

**[Slawomir Jaranowski](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=slawekjaranowski)** opened **[MSHADE-480](https://issues.apache.org/jira/browse/MSHADE-480?redirect=false)** and commented

When we rebuild project old shaded artifact is used.
m-jar-p doesn't rebuild a jar and shade plugin try shade again already

as workaround we can add

```


${project.groupId}:${project.artifactId}

```

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No further details from [MSHADE-480](https://issues.apache.org/jira/browse/MSHADE-480?redirect=false)

Start by reproducing the rebuild with m-jar-p and the Maven Shade Plugin, checking whether the old shaded artifact is reused. Compare the behavior with the shown artifactSet exclusion workaround; done means a rebuild does not shade an already shaded artifact, with a regression test or clearly documented reproduction.

Written by the indexing model from the issue text.