Proposed fix for damianszczepanik/cucumber-reporting#675

[KLBonn]

Issue #675 was closed because of missing functional impact.
But that ERROR log message still is there and initially confuses every colleague looking at the output.

A simple fix would be supplying an appropriate LOG4J config file (like you do already for unit tests).

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@77adbf8). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #712   +/-   ##
=========================================
  Coverage          ?   98.42%           
  Complexity        ?      445           
=========================================
  Files             ?       44           
  Lines             ?      953           
  Branches          ?       77           
=========================================
  Hits              ?      938           
  Misses            ?        7           
  Partials          ?        8

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 77adbf8...c1da6ca. Read the comment docs.

[damianszczepanik]

Happy to see this PR - thank you