[MDEP-266] Add parameter to configure copy-dependencies to also copy optional dependencies

**[Andreas Sewe](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=sewe)** opened **[MDEP-266](https://issues.apache.org/jira/browse/MDEP-266?redirect=false)** and commented

At the moment, copy-dependencies only copies non-optional dependencies. However, one sometimes wants to copy **all** dependencies -- even the optional ones.

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**Affects:** 2.1

**Issue Links:**
- [MDEP-661](https://issues.apache.org/jira/browse/MDEP-661) Add option to exclude optional dependencies for copy-dependencies

1 votes, 3 watchers

Start at the copy-dependencies goal and trace how it currently selects optional dependencies. Add a configuration parameter that controls whether optional dependencies are copied, then verify that both enabled and default behavior are covered by the plugin's tests.

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