update tests for nfs-client

the Report module now correctly logs the source line,
the testsuie needs to be adapted
Merge pull request #478 from lslezak/nfs-client_update_tests

update tests for nfs-client
Use --report-file when using --extract-file

This ensures that Y2R gets correct YaST module root-relative filename
and generates correct class name for the extracted include.

Part of a fix for https://github.com/yast/y2r/issues/23.
Merge pull request #479 from yast/use-report-file

Use --report-file when using --extract-file