Test resource files (.log) are excluded from source distribution, which makes logviewer-test failing

While building RC1 of Apache Storm 1.0.0 from source code distribution, I found that test for logviewer-test in storm-core is failing. It was not intermittent.

After seeking the reason, I found files on src/dev directory is different from repo, ".log" files are all excluded.

https://github.com/apache/storm/blob/master/storm-dist/source/src/main/assembly/source.xml

We excludes .log files in all directories which normally makes sense but not for now.