[MDEP-975] Command-line use of copy-dependencies does excludeTransitive=true when pom based use has that as false by default

**[Paul Hammant](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=paul)** opened **[MDEP-975](https://issues.apache.org/jira/browse/MDEP-975?redirect=false)** and commented

https://maven.apache.org/components/plugins/maven-dependency-plugin/copy-dependencies-mojo.html#excludeTransitive - suggests false is default.

Command line use ( I have a project that has okhttp as test dep):

 ```
mvn -q dependency:copy-dependencies -DincludeScope=test -DincludeArtifactIds=okhttp -DoutputDirectory=target/libs_for_test

```

This should have copied okio, kotlin-stdlib and okio-jvm, too, but did not.

I think the command line use of copy-dependencies should match the defaults of the pom/xml based use of the same
```

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**Affects:** 3.8.1

Start with the dependency:copy-dependencies goal and reproduce the documented command using -DincludeScope=test, -DincludeArtifactIds=okhttp, and -DoutputDirectory. Compare command-line behavior with the POM/XML default for excludeTransitive. Done means the command copies okhttp and its expected transitive dependencies, including okio and kotlin-stdlib.

Written by the indexing model from the issue text.