[MSHARED-1403] Configure log file as as File (not only file name relative to base directory)

**[Olivier Lamy](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=olamy)** opened **[MSHARED-1403](https://issues.apache.org/jira/browse/MSHARED-1403?redirect=false)** and commented


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**Affects:** maven-verifier-2.0.0-M1

**Remote Links:**
- [GitHub Pull Request #89
](https://github.com/apache/maven-verifier/pull/89)
