[MINSTALL-198] maven-embedder: second install-file overrides first one

**[Franz-Josef Färber](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=JIRAUSER305087)** opened **[MINSTALL-198](https://issues.apache.org/jira/browse/MINSTALL-198?redirect=false)** and commented

I am using the maven `install:install-file` goal with both cases: Jar-Files containing a pom-file or not, as described in https://maven.apache.org/guides/mini/guide-3rd-party-jars-local.html .

While on the command-line the following works:

```bash
mvn install:install-file -Dfile=somefile.jar -DgroupId=somegroup -DartifactId=someartefact -Dversion=1.0.0 -Dpackaging=jar -DgeneratePom=true

mvn install:install-file -Dfile=someotherfile-containing-a-pom-file.jar
```

using maven-embedder, it does not work: On the second install:install-file goal, the `-DgroupId`, `-Dartifact` parameters from the first call are still somehow present and trigger overriding the first Jar file in the local maven repo.

MRE: https://github.com/fjf2002/78041113-maven-embedder-maven-install-plugin-bug-second-install-file-overrides-first-one

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No further details from [MINSTALL-198](https://issues.apache.org/jira/browse/MINSTALL-198?redirect=false)