Revert "Merge branch 'disruptor-update' of https://github.com/miofthena/incubator-storm into STORM-350"

This reverts commit 78c5e231f679c84d14258d190c8658f8d0b98ad3, reversing
changes made to 9ac011129dc90418b9e8210abf0ff8e9f60be656.
remove STORM-350 from changelog
[STORM-410] Add groups support to log-viewer
Found a bug and fixed some tests to validate the bug is fixed.
Updated some of the tests.